Magana8

Alright like in my past posts, i explained my 8 randomly shut off on a trip to the airport, turning into the terminal, on a highway stop 65-70mph stop to a turn, rpm decreases, decreases, decreases, goes all the way to 0 and car shuts off, i basically unclamp my battery and reclamp it and it after a few trys it starts up again, so i havent worried about it unti a few days ago i was at a stop light waitin to turn green and car just shut off again. ~.~ I took it again to one of my friends hooked up the CPU and said Everything was perfectly fine, just to be sure i took it to advanced auto parts to check my battery and radiator, and they both checked out just fine, then the guy told me i should check my fuel system more specifically my fuel filter, What do you guys think? Anyone else having this problem??

Old Rotor

Please give us the history on your car. The service it's had and parts replaced. Model year miles, type of driving it gets(long commutes), fuel used(reg or prem), oil type and consumption, ever flooded, red lined. Just any thing that you can add

Magana8

2004 bought it at 38k i put it up to 41k its all stock driven every day oil changes about every 1500-2000 miles 5w-20 pennzoil umm not sure if its ever been flooded im not exactly sure what it would be like flooded, i redline every once in a while not every day but every once in a while i go 6-8 every day.

Old Rotor

Thanks for the info.....I wonder if the spark plugs have been replaced? They should have been by now and that could be why the idle is not smooth. What type of driving does it gets(long commutes short trips), fuel used(reg or prem).

Magana8

um it depends first of all i always let my car heat up now ive learned that much, Premim Gas, and it depends cause sometimes i have quick trips to the store and such, but when i cruise around its over 30min

Old Rotor

I would say spark plugs. If they get worse you will feel a slight hesitation when you ask for some power. You could run a can of Seafoam(Walmart $8) with half tank(run it til empty) of gas and see what that does for you. Spark plugs are 50-80 bucks and less than an hour to replace.

Magana8

i heard there are many steps you have to follow with seafoam including oil changes, and I actually dont even think my 8 is funning on NGK sparks

Old Rotor

If you were going to do a Mazda-ZOOM type de-carbon treatment I would recommend a oil&filter change at that time. If you want to do a minor cleanup I have used Seafoam with a half or quarter tank of gas with good results. Some times doing this twice to get best results. I have tried many many names in spark plugs in over 522K miles on seven different RX's and NGK(OEM) are the best and the only ones to use.

Magana8

so you dont give the car an oil change after the tank of gas is gone?

Old Rotor

No reason to change it then because you are not flooding the engine with liquid cleaner(like you do in the more complete Mazda-ZOOM job) and turning it off soaking wet for hours. It is burning it up as it cleans. I would give it a good wringing out when you are running it threw. Here is a copy of the Mazda TSB de-carbon cleaning.

http://www.finishlineperformance.com...4-08-1924g.pdf