harithac

HI ,
Today i cleaned my injectors and throtle body and car was perfect i drove about 40 KM s whithout an issue. But my car suddnly died at a point but it just started fine after couple of minutes , and it died agin , before all this i felt my car s engine was jerking like shaking whithout power.
Also last week i replaced my fuel pump i brought from ebay to my old assembly but had to modify the assembly to fix the pump .

And car died when it was little bit low on fuel
Is this my pump or did i do somethng wrong when cleaning injectors

RIWWP

iTrader: (2)

If you were in motion when it died, it is going to be a fuel pump problem. If it died at idle, it's likely to be either compression or ignition (or both).

I don't know what fuel pump you got, but this would be the 2nd "bought a fuel pump on ebay" thread in a week-ish where they still exhibited fuel pump failure symptoms.

gwilliams6

Sounds more like a fuel pump issue to me (I have experienced this myself in the past). There have been experiences of RX8 owners having problems with some poor quality pumps sold on ebay and also sold at auto stores. What pump did you buy and what modification did you do ? ( ie: pop-off valve modification and/or fuel line modification ?)

04Green

iTrader: (1)

Please define "a little low on fuel". Is that 7/8 tank, or 1/8 tank?

If 1/8 tank, very fuel pump'ish...

harithac

yes sir car died twice when I was moving ,

so hope its my pump , either way im gona replace the whole assembly today and see.

harithac

Sir I just brought a random fuel pump which suits my car ,, it worked ok for a week and yesterday I took the car for tuneup and my dealer did a pretty good job they have cleaned every possible engine component , when I got back the car from them it was not the same car I gave them it was different , engine was smooth indeed I have gained some more power.

but all the joy went away when it just died out of no where, actually I didn't do either of the modifications you mentioned what I did was the pump I brought was too short to put in side the assembly so made a rubber bush and then I fitted the pump .

harithac

Hello sir ,
it was just even below 1/8 the tank

when it stoped in the first time it took time to start like had to wait till 1or 2 minutes but when it died in the 2 nd time it started right away , but sir I felt something different from the engine like its jerking or starving for something is t related to the pump.

Razz1

Do you have an aftermarket intake?

Check for vaccum leak.

Nisaja

Vacuum leak causes jerking and random engine shutoff?

He has a 200psi Walbro pump. That's what he got off eBay.

He also forgot to mention that none of this happened BEFORE cleaning the injectors. Car never died with the new pump he installed. Just thought of throwing it in.

RIWWP

iTrader: (2)

Can you define exactly what he did cleaning the injectors then? Because cleaning the injectors would only ever produce a problem if he removed them for the cleaning, either screwing up something by hand or reconnecting them wrong, etc...

Even then though, messing up an injector would still produce a consistent behavior, not a periodic or only-over-time behavior.

harithac

No I dont have an aftermarket intake
And i did check for a possible vaccume leak and there was nothing ...

harithac

Hello sir,
My delar have removed the injectors and cleaned them ..

But the car didnt show up a single sign untill I drove about
40-50KM'S .
Today I change my entire fuel assembly and so far everything is fine sir , but I do feel something odd ,but it should be on my mind.. but my car was ok till I drive it home . Hope everything is allright now.

gwilliams6

What specific fuel assembly do you have in now? Some are better and less troublesome than others.

harithac

I installed a stock series 1 assembly

gwilliams6

harithac, from experiences of many owners, don't drive it down to 1/8 of tank. At low fuel tank levels the pump is exposed (not covered and cooled by the fuel) and this can lead to overheating and shorter life of the series 1 pump, as well as pump shutoff suddenly.

harithac

Yes sir , that's what even I thought of ,
I did continue doing the same mistake for months with my old assembly and will not do the same mistake agin.

and sir do you have any idea why my car is vibrating in idle little more than it used to , I do have bad mounts but
it feels odd cant say its a miss fire because rpm needle is stedy as hell.

gwilliams6

I think you nailed it, bad motor mounts probably. If your idle is steady, then it is NOT the following:

But if the idle was not steady, these are the items to check

Keeping the Engine at an Idle
• Ignition Coils
• Spark Plugs
• Spark Plug Wires
• Engine Compression
• E-Shaft Sensor (ESS)
• Mass Air Flow Sensor (MAF)
• Front O2 sensor
• Catalytic Converter (Cat)
• Intake Vaccum

harithac

Hi Sir ,

I need your opinion in this as I am helpless , I took it for a drive today then I switched off the car for like 2 or 3 minutes then turned the key to on position the temp was 213.8 at the time so the fans turned on as I turned the key to on , then I cranked but the car didn't started ,
then right away I took the key ahin and started again then car started fine .

then I stopped the car at two occasions , and it did start fine sir.

any idea sir ?

harithac

Guys my problem have been seriously increased.

it doesn't start at once after a drive when hot need to crank 2 times just to start ... but sometimes start like there is nothing wrong ,,, any suggestions ??

gwilliams6

Hot starting problems are often a sign of low compression, but click on link below for detailed analysis and solutions.

https://www.rx8club.com/series-i-tro...t-here-222584/



Starting the Engine
• Starter
• Battery
• Engine Compression
• Grounding Wires
• Ignition Coils
• Spark Plugs
• Spark Plug Wires
• Fuel Pump
• Fuel Injectors