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It Just Stopped

subzeroR33

By subzeroR33,
in Engines & Forced Induction

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subzeroR33 Mentor

subzeroR33

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Hey all, was driving along and my car started running rough so i pulled over, it sounded like i was running a huge set of cams. I turned it off and waited a while and then started it again it ran rough and thenit smoothed out so i drove it slowly home and parked it

I then started it again and it was running like shit and then it just died on, and now it wont start.

I change the fuel filter but that was just wishful thinking.

What do you think it could be.

It runs a Ltx 12 microtech so it has no AFM.

Thanks guys.

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Big Rizza Mentor

Big Rizza

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Does the engine turn over? Electrical fault? Charge in the battery? If electrical fault is messing with the ignition, the engine may be dropping a cylinder or two causing it to run rough? Dunno, just guessing from the info you've given.

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subzeroR33 Mentor

subzeroR33

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Does the engine turn over? Electrical fault? Charge in the battery? If electrical fault is messing with the ignition, the engine may be dropping a cylinder or two causing it to run rough? Dunno, just guessing from the info you've given.

Yeah i know mate it could be anything its a hard one, just wondering if this has happened to someone before.

No the engine wont turn over, but i have ignition and fuel.

And another thing it had a wierd burning smell coming from the engine so maybe it is electrical.

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dead32 Mentor

dead32

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are you running a plug and play adaptor with the microtech? ive had this problem once, car did same shit, id say the cylinder are full of fuel and it wont start, take the plugs out and or make the injectors not pulse, then crank crank crank it for ages till it clears, best bet is to take plugs out, then goto your ecu and make sure all the pins are in place and theyre touching all the time.. i.e wiggle the harness and make sure it doesnt cut out....

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subzeroR33 Mentor

subzeroR33

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Thanks for all the advice so far i will try it all tomorrow.

I was just driving the car normal around 3-4000rpm going up a hill.

^^ i run a MSD ignition with a Ford coil pack.

Edited by subzeroR33
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subzeroR33 Mentor

subzeroR33

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Its all fixed, checked the spark plugs they were covered in a sticky oily black sludge.

I didnt think to check them as they were irridiums put in about 12,000 km, they are spose to last 100 000km.

Anyway i will be saving my money in future and just buying the normal copper plugs for around $20 not $120.

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subzeroR33 Mentor

subzeroR33

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you're not worried as to why they were covered in oily sludge?

Well the microtech would have something to do with it, the injectors just flood the thing on start up so i spose over time they just foul up and probly to much upper cylinder lubricant.

Will keep a close eye on the plugs this time if they foul up to quick then i will need to fix this problem.

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drf76 Collaborator

drf76

Posted
Posted (edited)
It was playing up again today, does this sound like an issue with the coils.

It misses and then comes good, short time later it missesd then comes good. It is really shiting me now.

check your crank angle sensor plug might be coming loose or not plugged in properly or there is a short in the wiring, i had similar problem on my old mans 32 gtr where plug seemed to be plugged in but wasnt fully clipped in, it caused rough running and a really bad miss. I checked the plug and clipped it in properly and problem was solved. Also check if you have a good connection at the battery/ground to ecu is very important. And yes it could also could be a coil starting to break down especially if you are using a ford one :ninja:

Edited by drf76
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subzeroR33 Mentor

subzeroR33

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check your crank angle sensor plug might be coming loose or not plugged in properly or there is a short in the wiring, i had similar problem on my old mans 32 gtr where plug seemed to be plugged in but wasnt fully clipped in, it caused rough running and a really bad miss. I checked the plug and clipped it in properly and problem was solved. Also check if you have a good connection at the battery/ground to ecu is very important. And yes it could also could be a coil starting to break down especially if you are using a ford one :)

I will check it out. Im also getting a knocking sound from the injectors. May be a fuel thing to.

Yeah i know Ford coils :ninja:

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drf76 Collaborator

drf76

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I will check it out. Im also getting a knocking sound from the injectors. May be a fuel thing to.

Yeah i know Ford coils :ninja:

haha ford, i work for them but anyway yer could be injectors but when you said your spark plugs are pretty bad you tend to think its spark related, but you gotta somewhere, hope you find out what it is soon with out too much hassle :)

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