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sly32

By sly32,
in Engines & Forced Induction

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sly32 Proficient

sly32

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Posted

Hey,

ok so ive finally gotten my car out of the garage, but then i decided to take the car up and down the road just to make sure its running sweet,

so i took it to the end of the road (probably didnt go over 30kp/h), then on the way back boosted it a tiny bit maybe only to about 4g then changed gear, it then dropped a cylinder which is what ive been having troubles with, then it drop a few more made a noise and then stalled, (the noise sounds like the piston slapping when it drops a cylinder),

So This is driving me crazy with it keep dropping cylinders and what not, what could it be?

I have changed the sparkplugs many times between iridiums and coppers,

I have installed a 500hp fuel pump

Split fire coil packs,

changed igniter,

changed resistor pack,

checked the injector (visual check) injector 6 was pissing out fuel from when i first install them but it looks fine now,

fuel pressure is fine, on idle i think it was 37psi,

i have a dr drift ecu and z32 afm, but i dont know why it would drop cylinders like it is, if i turn the car off and back on most the time all cylinders will be firing but then will soon stuff up again?

im pretty over this and thing of taking it to a workshop,

Cheers JV

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sly32 Proficient

sly32

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Posted (edited)
Sounds like a good suggestion.

Have you tried talking to Sam about it?

who's sam?

yeah its just i cant figure out the problem i dno why its doing this?

EDIT: o u mean dr drift, yeah the car wasnt running right to start with turned out ti was the alternaotr that went in it so it was trying to run of battery, thats all fine now, and its not the chip because it did the same with a stock computer and afm in there,

did a ecu test and it came back all ok

Edited by sly32
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sly32 Proficient

sly32

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Nah, I meant have you spoken to Sam about diagnosing it?

Or did you get his chip done through some other place like Mercury?

nar i havnt, i sent my ecu down to sam to chip, it has nothing to do with the ecu though as i installed a stock ecu and afm to see if it was the problem but it wasnt,

on another forums some1 has suggested that it could be the grounding from engine and battery? maybe thats why when the revs gets higher and so does the charge if the ground is shit then it screws up? possible? sounds like it might have something to do with it?

z32afm has been tested and is fine, alternator is fine, fuel pressure and fuel pump are fine, coils are fine, changed the injector harness and injectors, split fire coilpacks are fine, coilpack harness has been changed to a fresher 1, (did the same thing on the old harness though) changed igniter, and resistor pack, so maybe it is the grounding? cause if it was cas then it would come up on the ecu check? and normally when the cas goes then the car wont run at all,

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