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help please - gtr running like a dog

dickogtr

By dickogtr,
in Engines & Forced Induction

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dickogtr Rookie

dickogtr

Posted
Posted

I've only had my R32 GTR for a week and already its broken down!

Went for a quick run, 1st, 2nd, 3rd then backed off. Next corner the car lost all power - felt like it was running out of fuel, then it conked out altogether. Thought maybe we had run out of fuel so dropped a few more litres of unleaded in it - it started but still running like a dog - clouds of black smoke out the back and no power.

Got the car home and found the intercooler pipe had blown off the turbo side of the intercooler. It makes sense car would be running bad with intercooler pipe off since afm's would be reading zero so running very rich.

Anyway, I put the pipe back on and refilled with PULP but car still running bad - now it wont even start at all.

Did the standard investigations - check for spark and fuel and both are OK. Plugs are very black/sooty, and there is very strong smell of fuel through exhaust.

How could the intercooler pipe blow off, and why would the car run like a dog/not start once that is fixed? Seems like the computer is pumping way too much fuel through?

Can anyone give me any advice at all?

thanking you with all my newbieness

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Dust Brother Apprentice

Dust Brother

Posted
Posted

how about this, get off the net so I can call you!!! I have an some suggestions.

A mate reckons the o2 sensor may have carked it from the fuel, otherwise BOV is stuck open, or Air Flow Meter didn;t like the fuel either and needs looking at. Apparently there is a screw on the side of it??

N/A® Experienced

N/A®

Posted
Posted
how about this, get off the net so I can call you!!! I have an some suggestions.

A mate reckons the o2 sensor may have carked it from the fuel, otherwise BOV is stuck open, or Air Flow Meter didn;t like the fuel either and needs looking at. Apparently there is a screw on the side of it??

Firstly the O2 sensor doesnt do much more than give u better fuel economy at cruising speed.

Secondly, "apparently there is a scre on the side of it" concerns me. Perhaps you shouldnt be taking to a GTR like its a Ford Meteor?

Amaru Veteran

Amaru

Posted
Posted

How fouled up are the spark plugs? Check for anymore leaks anywhere and if the plugs are fouled, try putting a new set in. If you can get the car started and its still missing on idle disconnect the coil packs one by one (e.g disconnect one then reconnect it). As you disconnect them the car should start running rougher until you reconnect it again. The cylinder(s) that you disconnect the coil on and it doesnt change the idle of the car is where your problem is.

Just a few quick things you can try if you havnt already. A set of copper NGK's should cost about $25 from supercheap (BCPR6ES I think they are from memory? Do a search).

EDIT: I also noticed you saying you put unleaded in it, then you put some PULP in it?? You are aware that a GTR is meant to run on 100 octane fuel and even our PULP isnt quite up to scratch? You should -NOT- be running the car on standard unleaded, not to mention giving it a "run" through 1st/2nd/3rd. If you were flogging it on normal unleaded, I wouldnt be suprised if some internal engine damage has been caused.

Amaru Veteran

Amaru

Posted
Posted
What are you talking about?? Its an RB26, they don't just blow up.

Like hell they dont... it takes under 5 seconds of abuse/mis-treatment for one to go bang. Its an engine just like any other car, it doesnt have super special non blowing up powers.

N/A® Experienced

N/A®

Posted
Posted

Im thinking, you gave it to much, pipe blew off and you keep trying to get it running. Doing that with the pipe off, stuffed up the plugs which were probably in bad shape already. Noticed the pipe and put it back. Now it still wont turn over because of the plugs.

As Amaru suggested, get a set of plugs and try. SHOULD solve the problem. And if it does, count your self lucky please get some better advice on what to do and what not to do with the GTR. Ie; not run more than 1 bar on stock turbo's etc.... or else it will be an expensive learning excercise.

Dust Brother Apprentice

Dust Brother

Posted
Posted

I believe it was running Optimax at the time, the unleaded was a couple of litres to make sure it had fuel. Do gtrs have a 'limp home' function in the EMC?

I've just been informed that it hit a bump in the road just prior, which may have caused the 'cooler pipe to come off.

EDIT. Btw thanks for the advice guys. The gtr is a bit of a step up from a datto 1600...

PHaT MR30 Grand Master

PHaT MR30

Posted
Posted

Just a few quick things you can try if you havnt already. A set of copper NGK's should cost about $25 from supercheap (BCPR6ES I think they are from memory? Do a search).

QUOTE]

Yeh those plugs are great, don't even change the gap on them is what my mechanic said

Hiroshima Screamer Grand Master

Hiroshima Screamer

Posted
Posted

this may be a stupid answer but some times the most little detail is missed , did you check all the pipes sometimes when u tighten one another might come off if one is loose there maybe another in the same condition

cooler pipes may have come off if a previous owner tamperd with them before selling .

dickogtr Rookie

dickogtr

Posted
  • Author
Posted

thanks Amaru/Morgs/NA

Changed the plugs to the suggested NGK's - car started first hit of the starter. Problem seems to be resolved thanks very much guys. The car belched black smoke and soot for a while then settled down to normal.

The fouled plugs that came out were HKS S-40's - not sure weather it is worth finding another set of those rather than the copper NGK's.

For info - the NGK BCPR6ES come in BCPR6ES-11, there is no difference except the -11 designation means the plugs are preset to 1.1mm plug gap - so no adjustment of those required prior to install.

Anyone got any suggestions as to why the intercooler pipe would blow off in the first place?

Amaru Veteran

Amaru

Posted
Posted
The fouled plugs that came out were HKS S-40's - not sure weather it is worth finding another set of those rather than the copper NGK's.

I had a brand new set of the HKS plugs in my car when I bought it and they fouled like a bastard almost instantly, I wouldnt bother with them especially for the price you pay.

Stick to the NGK coppers and give them a clean every service (5000kms) and change every second service (10,000kms) and you should have no dramas.

Meanwhile, I noticed youre in Canberra -- were having a cruise tomorrow nite (friday) meeting at 9pm at the national museum, come past if you like.

:)

Morgs Veteran

Morgs

Posted
Posted

dicko, intercooler pipes will pop off all the time if the clips etc are not tight enough. Fair bit of pressure running through there. Keep with the copper plugs just change them regularly. Good to hear you've got it sorted.

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