Jump to content
SAU Community

Not Another Misfire Thread....

trel

By trel,
in Engines & Forced Induction

 Share

Recommended Posts

trel Mentor

trel

Posted
Posted

So tonight after work I decided to clean my engine bay. All well and good, did it while car was running no problems.... I finish up start driving home and just briefly gave it a squirt and I got the dreaded miss... No worries I thought, it must be due to the engine clean I had just done.

I get about 3 streets away from my place and the misfire starts on low throttle, I pull up into my driveway and the car sounds as if it is running on 5 cylinders now...

I'll leave it overnight and see if there might have been some excess water that may have dropped into cylinders. Would anything else cause this though other than "your coilpacks are hammered" or "change your plugs"...

It must be related to the clean I just did, but if I have damaged anything in the process what should I be looking at?

Cheers.

Link to comment
https://www.sau.com.au/forums/topic/274909-not-another-misfire-thread/
Share on other sites
mad082 Grand Master

mad082

Posted
Posted

it will more than likely be due to moisture as guilt-toy said. first look for any pools of water around the plugs. if there is use a compressor to blow the water out or tissues to mop it up if you don't have a compressor. do this before removing the plugs.

then take the plugs out and give them a wipe down with tissues, and do the same with the coils. stick it all back together and see how it goes

shaunvlc Enthusiast

shaunvlc

Posted
Posted

pull the coilpacks out. when i did my engine bay. i covered all the electrical components. still managed to get water into my coilpacks. on some cylinders the water completed covered the spark plugs. didnt take long to clear out and is also good as you can check that the coilpacks and plugs are in decent condition.

trel Mentor

trel

Posted
  • Author
Posted

Was planning on doing your suggestions tomm. Weird thing is though, I started it today no problem until car got warm and I opened throttle a bit.. Misfire again even on idle.. Looks like a trip to burson tomm. For plugs and can of compressed air.. Will let you know how it all goes. Thanks for the suggestions.

GUN32R Apprentice

GUN32R

Posted
Posted
Was planning on doing your suggestions tomm. Weird thing is though, I started it today no problem until car got warm and I opened throttle a bit.. Misfire again even on idle.. Looks like a trip to burson tomm. For plugs and can of compressed air.. Will let you know how it all goes. Thanks for the suggestions.

I had a misfire problem for the past month after installing a new ECU, cam gears and injectors (R32 GTR). We replaced ignitor, coils, plugs, ECU - checked fuel filter, fuel pump, earthings etc etc - remapped fuel also. After doing this (all on Dyno etc) we still couldnt resolve it.

IT ENDED UP BEING THE EXHAUST MANIFOLD GASKET!!!

If you get nowhere on the electrics try to listen out for a hissing noise around the exhaust manifold.

mad082 Grand Master

mad082

Posted
Posted
Was planning on doing your suggestions tomm. Weird thing is though, I started it today no problem until car got warm and I opened throttle a bit.. Misfire again even on idle.. Looks like a trip to burson tomm. For plugs and can of compressed air.. Will let you know how it all goes. Thanks for the suggestions.

this is due to the extra load once you get on the gas. very few missfires happen at low load

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      Rb25det s1 igniter pin out

      By GTSBoy · Posted

      It's definitely not firing order. But I think it should also be made clear that the output that gets fired is the one that corresponds to the input that was switched at the ECU. So you could scramble them up totally so that the numbers meant nothing, and so long as you had the inputs and outputs matched up, you'd be fine. The reason I make that point is that blanket statements about what it is supposed to be don't always hold out in a world where there's been 30 years for the wiring to have been stuffed with.
    • EndZee
      Rb25det s1 igniter pin out

      By EndZee · Posted

      Hello, im asking about this guy - coil igniter on rb25det series 1 r33 s1 engine. I need to know if pins on coil side indicate coils itself from 1-6 or it’s firing order so pin nr1 goes to 1st fired spark plug:(1pin-1firing spark, 2pin-5order firing spark, 3-3, 4-6, 5-2, 6-4…)   photo: https://files.fm/f/k9pdug38uq
    • GTSBoy
      Powder coat on mating surface

      By GTSBoy · Posted

      Remove it. Certainly from the hub face. I'm not in love with leaving it on the wheel assembly surface either - but if it is common to do so, then....maybe fair enough. It's not difficult. Just time consuming. For the hub face you just need a large enough block and suitable grades of abrasive paper to get it off flat. The same would be true of the assembly face. Just more time consuming, probably needing a lot more care. It's defo going to be easier just to assemble the wheels as is, seal them up, and check them periodically to see if there's any movement or loosening of the fasteners, than it will be to remove it though.
    • dyl33
      Powder coat on mating surface

      By dyl33 · Posted

      Hello, I got my wheels powder coated and they've powder coated bloody everything the mating surface and hub (even told them not to lol) anyway should I leave it or remove it. (Would be very hard) I've searched a lot and lots of powder coaters don't mask the mating surface but do mask the hub surface. How bad it powder coat on the mating surface or hub? My question is what should I do?
    • dbm7
      R34 Gt Auto Tuning

      By dbm7 · Posted

      Yeah, R34 with RB25DE likely has a 4AX01 box in it, which is a medium duty auto ~ with the RB25DET mill, it would've been fitted with 4AX00 (4AX13) heavy duty build (same case, different internals). An RB25DET will lunch on a medium duty 4R01 auto in pretty short order ...to give you some visual idea of differences between the 'medium' and 'heavy duty' boxes, you only have to look at the 2/4 band for comparison...it's chalk and cheese...(plus bigger high clutch, extra pinion in the planetary sets, higher oil pump output, different bearings, higher TC stall speed )... You can control them with just about any aftermarket TCU for electric-over 4-speed with TC lockup clutch (ie; the GM 4L60E and others)...I have a custom standalone TCU that includes MAP sensor (for turbo applications) along with TPS, RPM, and line pressure monitoring...in other words, I don't use any ECU signals...no real need to.
×
×
  • Create New...