help! car jerks under light acceleration

[Jmac]

the car has been doing it when it was fully stock. only put the BOV and SRI on in the last week. im thinking a air leak somewhere. ECU has been reset.
With the electrical connection of the MAF, what should i clean it with? circuit board cleaner??? or something else?

---------- Post added at 10:37 PM ---------- Previous post was at 10:36 PM ----------


sorry mate what is a ht sport?

Hey mate there is s how to on here.
Electrical contact cleaner and dont drop it or touch the sensor

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[TD]

I've been thinking more on this, the only car I ever had that did this was cured by new plugs and leads, but it was nowhere near as complex a beast as the MPS.

Bet you it's frustrating the crap out of you! It's frustrating me that I can't figure it out!

[lawsoo]

I've been thinking more on this, the only car I ever had that did this was cured by new plugs and leads, but it was nowhere near as complex a beast as the MPS.

Bet you it's frustrating the crap out of you! It's frustrating me that I can't figure it out!

Yeah i was thinking that could be it. I think ill try everything people thave said. And see what happens. Thanks for everyones help ill keep everyone posted when i find the prob.

[MadAussie]

You haven't done something as simple as wash the engine bay recently and gotten water down the plug valley?

[Duk]

Vaccum leak, Fuel Pump, spark plugs are what come to mind, Im assuming this wont happen at wide open throttle?

[lawsoo]

Vaccum leak, Fuel Pump, spark plugs are what come to mind, Im assuming this wont happen at wide open throttle?

yeah thats right. Car runs fine with wide open throttle.

[Spudspec]

Hey mate, Our MPS 6 has similar issues, especially when the aircon is on(most of the time that is) feels like a flutter. At first I thought it were a boost issue, then I thought turbo, fuel filter, pump, plugs leads etc etc. Now I am not going to stereotype the dealer "TECHNICIANS" but they are now just that TECHNICIANS, not alot of real mechanics these days,,There are some, dont get me wrong. anyways, the reason you will be getting told that "they all doit" is because in their book of things a similar phenomenom is a trait of the mazda direct injection. anyways My thoughts aer it is to do with manifold design and at those ervs the vaccuum and pressure constants arent tuned verywell.. sorry I cant explain myself a bit better, I is not too goodly wif spelin and words and stuff... hope this helps.