[street-candy]

Hi, I have a fairly stock R34 GT-R V-Spec 2, The car starts first flick of the key from cold,but as soon as it has warmed up it takes several turns to fire? Sometimes it turns over for 5 seconds or so then fires,other times it has to be turned over for around 10 seconds 3 or 4 times before it fires? Once it starts it runs fine...Anyone had this problem?
Thanks

 

[aaron_bc]

Hot start problems usually mean low compression. Have you done a leak-down recently?

 

[street-candy]

hi, i have had a compression test carried out and its all good, it seems to be an electrical problem?

 

[Asim R32GTR]

Try to check the watertemp sensor.
Also check fuelpressure during starting when cold / hot.

One easy thing to do is just do disconnect the lambdasensors.

Asim

 

[aaron_bc]

I'm not talking about a compression test.

A compression test tells you if your engine is broken or not... a leakdown tells you how healthy it is.

Look up how to do a leakdown and give it a go (keep in mind no "liquids" are actually involved in a leak down ).

Post up results.

A tight "race" engine should be anywhere from 5-7%, and average motor in good shape under 15% and anything over 25% is bad news. I wouldn't want an RB over 15% at any time, and under %10 I would consider good for this engine.

 

[bashman40]

does your car have a immobilizer? if so check its not that i had the same problemwith my golf GTI and it was the stupid immobilizer that keep cutting the car off

 

[bala888]

Please check the Cam Angle Sensor. It could have been faulty. I had the same issue. everytime the car is warm and unable to start.

 

[yodookie]

I seem to have the same issue, but not as bad.

If I go to start when hot after sitting maybe 1 hour, I have to crank 3 or 4 times to get the motor to light. When it does start, I get black(rich) smoke out the exhaust until it runs maybe 5 seconds and then everything is OK.


If it's cold, no problem. Starts up first crank. My tune has O2 input disabled, if that helps.

 

[boosh]

i would check temp sensor too!!

 

[GTR Cook]

After three years i would check the thread date.

 

[boosh]

ha ha ha didnt even notice!!