Pettit Super Charger Owners
#5051
Yeh, I think Cams rite, it was your clutch cooking id imagine, it would explain the DSC and also since it was slipping so bad it probly overheated then blew. I hope to god that its the only problem.
#5052
why would the dsc think you were on a slippery surface? If you activate the dsc somehow it will retard timing(it will also pull timing during a fuel starvation situation) to pull power to control the traction. Large injectors+ wrong timing=boom? because fuel buildup then the spark came on? Carburetor engines used to do it all the time--blow back--when the timing got wacko.
Now why was the clutch stuck on the floor? Did you blow the clutch? If you blew it and the car was still in gear--was the pcm reading that the tires where slipping and retard the timing on you?
olddragger
Now why was the clutch stuck on the floor? Did you blow the clutch? If you blew it and the car was still in gear--was the pcm reading that the tires where slipping and retard the timing on you?
olddragger
Why did the DSC think I was on a slippery surface? No clue. The battery was disconnected when I changed the injectors, and when I hooked it back up, I had the DSC light.
BTW, I want to make it clear, this is not a Pettit problem. It's either my bad or a Mazda bad, but I don't see it as being a problem with the S/C system.
#5053
Just a thought, you mentioned a clogged cat. Greg had somthing happen to him when his Cat clogged but not as drastic (boost spike and loss of power. Maybe since you have the bigger crank pully on it was intensified to the point of causing more damage and the point of the timming being so far off, you said -20 rite. It might have fired the motor over backwords instantly. It might have caused damage to your tranny, clutch and probly motor also since it wont start up or even go into gear. Dosnt sound good at all.
I don't think the 09 injectors are that big of a mismatch for this setup, especially with the larger pulley. I've beaten myself already thinking I didn't get the injectors in the rail properly, but dammit I triple checked them before, during, and after re-installing the fuel rail, and then rechecked them after I did the ECU room fuse/idle reset, and there were no leaks. None. The car idled perfectly, ran through the gears well, but when I got on the gas in 3rd at 6k, it fell flat on its face, owing, I thought, to the DSC being active. Then I see 20 degrees of timing retard with large TPS values and figure that's the DSC at work; trouble is, at those points, the lamba is stil within ranges, so fuel is still being delivered, but not burned completely. After I realized the DSC or something was holding it back, I didn't try to romp on it any more, just wanted to get a feel for how the car was running. Took a total of three miles for it to grind to a dead halt.
#5054
He may be right, I haven't considered the clutch up to this point, but a clutch blowing up makes a different sound than an intake backfire, and doesn't bow the hood up 6 inches. Usually there is a little trail of tinkly parts left behind, and I checked, that wasn't the case either. I'm fairly sure whatever happened happened inside the motor/exhaust. The question is, what.
#5055
Registered
It sounds like fuel was being sprayed and did not go into the engine, then a spark hit the mixture.
Another thought: "Vacuum" tap comes loose, boost pushes air and fuel out (the stumble), then boom.
Are you sure your fuel injectors were wired correctly?
You were not running NOS; were you?
#5056
Plugged cat, and a broken Apex seal?
It sounds like fuel was being sprayed and did not go into the engine, then a spark hit the mixture.
Another thought: "Vacuum" tap comes loose, boost pushes air and fuel out (the stumble), then boom.
Are you sure your fuel injectors were wired correctly?
You were not running NOS; were you?
It sounds like fuel was being sprayed and did not go into the engine, then a spark hit the mixture.
Another thought: "Vacuum" tap comes loose, boost pushes air and fuel out (the stumble), then boom.
Are you sure your fuel injectors were wired correctly?
You were not running NOS; were you?
First, No NOS.
Second, absolutely positive the injectors were wired correctly; I numbered the connectors before I pulled the injectors from the rail, even numbered the rail to correspond. I suppose it is possible that the vaccuum tap cam loose, I honestly doubt it. Also, I'm confused about that one; if the tap cam loose, how did fuel come out? The tap is on the inner aspect of the UIM, the injectors deliver fuel below the LIM; if the tap did come loose, the car would run like crap for sure as it leaned out, but I didn't get a CEL before the big bang. Apex seals, can't honestly rule that out yet, but the car only has 24.500 miles.
I'm pretty sure the fuel went into the engine; it's what happened after that I'm trying to verify. Next questions?
Last edited by zenrx8; 04-26-2009 at 08:52 PM.
#5057
Guppies? Anyone?
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NOS isn't flammable. So unless the detonation was from over pressure in the rotor housings (which doesn't seem like it was) I don't think it was NOS--as in a leak of NOS out of the system or what not.
It could have accelerated a small fuel leak if they were both present in the intake... but I don't know how they would both end up there?
It could have accelerated a small fuel leak if they were both present in the intake... but I don't know how they would both end up there?
#5058
Registered
First, No NOS.
Second, absolutely positive the injectors were wired correctly; I numbered the connectors before I pulled the injectors from the rail, even numbered the rail to correspond. I suppose it is possible that the vacuum tap cam loose, I honestly doubt it. Also, I'm confused about that one; if the tap cam loose, how did fuel come out?
Second, absolutely positive the injectors were wired correctly; I numbered the connectors before I pulled the injectors from the rail, even numbered the rail to correspond. I suppose it is possible that the vacuum tap cam loose, I honestly doubt it. Also, I'm confused about that one; if the tap cam loose, how did fuel come out?
The tap is on the inner aspect of the UIM, the injectors deliver fuel below the LIM; if the tap did come loose, the car would run like crap for sure as it leaned out, but I didn't get a CEL before the big bang. Apex seals, can't honestly rule that out yet, but the car only has 24.500 miles.
I'm pretty sure the fuel went into the engine; it's what happened after that I'm trying to verify. Next questions?
I'm pretty sure the fuel went into the engine; it's what happened after that I'm trying to verify. Next questions?
OTOH: Cam is usually right on anything Mazda.
#5059
whines all the way home
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I think Denny's ideas sound resonable,,,
And of course Moon mentioned what happened to me but that was at 120mph and I hear a big bang, a huge plum of smoke shoot out the exhaust and a boost spike of 15psi (again 5th gear moderate pull at 120mph), but it sounds like you were just cruisin at a safe speed,,,,
You said the car was sitting for a while????
I wonder if that had anything to do with it along the theories of fuel build up,,,,
Were you in between shifts? what rpms were you at?...
And of course Moon mentioned what happened to me but that was at 120mph and I hear a big bang, a huge plum of smoke shoot out the exhaust and a boost spike of 15psi (again 5th gear moderate pull at 120mph), but it sounds like you were just cruisin at a safe speed,,,,
You said the car was sitting for a while????
I wonder if that had anything to do with it along the theories of fuel build up,,,,
Were you in between shifts? what rpms were you at?...
#5060
I think Denny's ideas sound resonable,,,
And of course Moon mentioned what happened to me but that was at 120mph and I hear a big bang, a huge plum of smoke shoot out the exhaust and a boost spike of 15psi (again 5th gear moderate pull at 120mph), but it sounds like you were just cruisin at a safe speed,,,,
You said the car was sitting for a while????
I wonder if that had anything to do with it along the theories of fuel build up,,,,
Were you in between shifts? what rpms were you at?...
And of course Moon mentioned what happened to me but that was at 120mph and I hear a big bang, a huge plum of smoke shoot out the exhaust and a boost spike of 15psi (again 5th gear moderate pull at 120mph), but it sounds like you were just cruisin at a safe speed,,,,
You said the car was sitting for a while????
I wonder if that had anything to do with it along the theories of fuel build up,,,,
Were you in between shifts? what rpms were you at?...
The car had been sitting about 2 months - usual bad winter weather. I wasn't between shifts, was cruising steady throttle about 40 mph, maybe 3K rpm.. Yes, I agree a LIM leak would allow fuel to leak out, it's the only other place, funny it would choose to show up now, who know. The LIM has never been off.
I don't know if the car having sat for a while had much to do with any fuel build up. After I installed the injectors, I did an ECU reset by letting the car sit and idle until up to operating temp, then holding at 2K, 3K, and 4K rpm for 10 seconds each, the shut it down. It idled smoothly as always during the reset, and I checked for leaks, loose hoses. There were no leaks, no smell of raw gas, either in the engine bay or from the exhaust. I did the reset in the garage, so I got a goo sniff.
Here's one other issue: recently there had been some discussion about the potential dangers of a clogged cat. I had begun to suspect that my stock cat might be going; the car didn't seem to have quite the punch I remembered when the S/C was first installed, but it didn't throw any codes so I kind of back burnered the thought. So now I leave with new injectors and a larger pulley and questionable cat; throw in 20 degrees of ignition retard thanks to the DSC and there's the potential for a lot of unburnt fuel to make it to the cat; I think that's why the car stalled when I turned around in a parking lot; the cat was starting to get hot and plugged. Just a little farther down the road and the cat loses a piece and obstructs; raw fuel ignites and blows back; that with the blower pushing, albeit at very low boost, and bang, there goes the boot connecting the blower and the UIM. Beyond that, I'm not sure. Hell, not even sure about that. The only thing I do know for certain is that the injectors were in tight and there were no fuel leaks when I left home, but 3 miles later, bam.
Any further diagnosis will have to wait 'til Moon makes it up here; she'll sit until then. And yeah, I plan on calling Cam too, and let me say again, this problem is either my fault or a problem with my car, not with any Pettit gear.
Last edited by zenrx8; 04-27-2009 at 05:44 AM.
#5061
whines all the way home
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I think more consideration needs to paid attention to the ABS,,, Especially since you said it went AWALL just before and after the incident....
WE all had to cut the outer bracket of the ABS system,,,, and this is really way out in left field but what if something jarred loose an electrical connection, this partnering with re routing the fuel lines, I wonder if somehow you had open current which somehow ignited a fuel line,,,
Way out in left field but who knows....
WE all had to cut the outer bracket of the ABS system,,,, and this is really way out in left field but what if something jarred loose an electrical connection, this partnering with re routing the fuel lines, I wonder if somehow you had open current which somehow ignited a fuel line,,,
Way out in left field but who knows....
#5062
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Bittersweet news Zen,
I ran all written data last night on my state-of-the-art computer and here is your car diagnosis. You have a clogged catalytic converter and a broken clutch disk. Exhaust gases where not able to escape at optimum “speed/flow” hence stalling/catastrophically reducing the engine revolutions per minute RPM while the car was in gear. Therefore, luckily your clutch disk became the weakest link between the flywheel and the drive train. BTW, I’m just writing exactly what the computer monitor says since my Polaroid camera does not have the capability to focus past 1X.
Last edited by marsredr100; 04-27-2009 at 07:06 AM.
#5063
Guppies? Anyone?
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The one thing I would like to add deals with combustion. You said there was an explosion? A large explosion. That means that either you had a lot of back pressure or a lot of fuel ignite.
If the cause of the boom was a fuel leak igniting, the only thing that would cause an explosion like that is vapor--not liquid--gasoline. So the fuel must have been able to vaporize or pool in one spot before it could have been combusted. I think it would take either a fairly large amount of vapor to explode in the manner you described, or a very small amount in a highly pressurized location.
I think it rules out fuel lines.
If the cause of the boom was a fuel leak igniting, the only thing that would cause an explosion like that is vapor--not liquid--gasoline. So the fuel must have been able to vaporize or pool in one spot before it could have been combusted. I think it would take either a fairly large amount of vapor to explode in the manner you described, or a very small amount in a highly pressurized location.
I think it rules out fuel lines.
#5067
DEVILMAN
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I had an incident with a clogged cat this past summer, but all my car would do is intermittently stumble/stall for no reason that was apparent at the time. After a week of this, I decided to take off the cat pipe. Immediately after removing the cat pipe I could hear that something was loose inside.
Looking inside of it, I noticed a huge chunk of catalyst material was loose and was just the correct diameter to prevent it from moving out of the end of the pipe. I immediately took a long screwdriver and hammer to it, and have not experienced the problem since.
My suggestion is that you jack the car up and take off the mid-pipe and see what you have.
Looking inside of it, I noticed a huge chunk of catalyst material was loose and was just the correct diameter to prevent it from moving out of the end of the pipe. I immediately took a long screwdriver and hammer to it, and have not experienced the problem since.
My suggestion is that you jack the car up and take off the mid-pipe and see what you have.
#5069
Bittersweet news Zen,
I ran all written data last night on my state-of-the-art computer and here is your car diagnosis. You have a clogged catalytic converter and a broken clutch disk. Exhaust gases where not able to escape at optimum “speed/flow” hence stalling/catastrophically reducing the engine revolutions per minute RPM while the car was in gear. Therefore, luckily your clutch disk became the weakest link between the flywheel and the drive train. BTW, I’m just writing exactly what the computer monitor says since my Polaroid camera does not have the capability to focus past 1X.
Damn, Juan, I wish I'd known your degree of electronics sophistication before I solicited your advice
#5070
I think more consideration needs to paid attention to the ABS,,, Especially since you said it went AWALL just before and after the incident....
WE all had to cut the outer bracket of the ABS system,,,, and this is really way out in left field but what if something jarred loose an electrical connection, this partnering with re routing the fuel lines, I wonder if somehow you had open current which somehow ignited a fuel line,,,
Way out in left field but who knows....
WE all had to cut the outer bracket of the ABS system,,,, and this is really way out in left field but what if something jarred loose an electrical connection, this partnering with re routing the fuel lines, I wonder if somehow you had open current which somehow ignited a fuel line,,,
Way out in left field but who knows....
#5071
I had an incident with a clogged cat this past summer, but all my car would do is intermittently stumble/stall for no reason that was apparent at the time. After a week of this, I decided to take off the cat pipe. Immediately after removing the cat pipe I could hear that something was loose inside.
Looking inside of it, I noticed a huge chunk of catalyst material was loose and was just the correct diameter to prevent it from moving out of the end of the pipe. I immediately took a long screwdriver and hammer to it, and have not experienced the problem since.
My suggestion is that you jack the car up and take off the mid-pipe and see what you have.
Looking inside of it, I noticed a huge chunk of catalyst material was loose and was just the correct diameter to prevent it from moving out of the end of the pipe. I immediately took a long screwdriver and hammer to it, and have not experienced the problem since.
My suggestion is that you jack the car up and take off the mid-pipe and see what you have.