MK2 Issues Help Needed

[John007]

Hello, I am after some advice.

I have just bought an H reg 1.8, 8V GTI.

I am having a few issues with it, the previous owner spent a small fortune on it before parting with it, it has a Kent cam and pulley, gas flowed head ,new valves and seals full Magnex exhaust with 4 branch manifold.

With all this work carried out 8 months ago it dosent run to well,

It stalls when hot and is a pig to restart,

Smokes after you have given it a boot full, smoke is white and smells of fuel.

There is no mayo in the oil nor oil in the coolant, it hasnt seemed to used either in the few miles that I have done in it.

I replaced the oil breather gromit as this had split hoping that this was the problem, this improved the coldd start but not the warm,

I darent go fill it up with fuel as I know it will not restart for 10 minutes, and dont want to push it off the forecourt and wait and face the embarresment.

Any help would be greatly appreciated.

[dan23]

i used to have a reno 19 that had kent cams and it used to stall alot, this is becasue the tears on the cams are longer and hole the valves open when they are ment to shut so with a normal idle speed it would stall, i found that if i sped up the idle to arounf 1500rpm it used to solve the stalling, you can try this, its not hard just adjust the accelerator cable.

wit the hole stalling and not starting, mine suffers from the same thing, its due to the fuel floods the injectors iirc. the best way to get around this is if it stalls just before you turn the key give the accel peddle one push then dont touch it cos everytime you push the peddle your letting more fuel through, this could also be why your getting white smoke throught the exhaust when you boot it as the fuel is flooding your engine

[John007]

I will try adjusting it, there is quite a bit of smoke though,

Just seems funny that it starts and idles fine when its cold, it drives ok when your going its just when you need to stop.

[dan23]

yeah had the exact same problem with my reno mate, try adjusting the idle the get the car at running temp and see if it happenes again

[DarnPB]

I had this kind of problem with my last MKII and after loads of trouble shooting, I diagnosed the ECU. I swapped it with one out of my mates car, and bingo!! Perfection. I bought another out of a breakers yard, fitted it and re-set up the engine and the difference was incredible. My old ECU, I think had been re-chipped...badly.
By the sounds of it, the previous owner of yours obviously tuned for more power. He may have inserted the wrong chip.
If the engine is over fuelling, get it sorted quickley as it could result in detrimental affects to your engine.

[John007]

I will get this checked out asap, Im not using the car at the minute as I darent.

I had the plugs out at the weekend and they were balck and all gunged up.

Cleaning them didnt help the start much either, but it proves that it is defo a fuelling issue.

Cant understand somebody paying out £1700 for engine work and then be happy with it running like a bag of spanners.