Hi Guys, I hope you can help me with my problem.
My 12V 3.0 V6 is a track car that Iíve finally finished. It went to Donington a couple of weeks ago and performed fantastically, handling like a dream. The engine is standard apart from C&B cams. Towards the end of the day the water temps were starting to get higher (up to 100-110 rather than 80/90), so I took it easy and let the car cool down more. It was fine on the way home, but I took it out later and whilst pulling away from a set of traffic lights I noticed the car felt significantly down on power. I thought it was just too hot, so I left it for a few days.
Upon trying to start it a few days later I made the following observations:
Cold starting really poor. It takes probably 15 seconds to catch, normally itís on the button.
It wonít idle on itís own until itís warmed up. Once warm it will start on the button as normal and revs freely whilst stationery.
There are no knocking noises or lumpy power delivery (once warm), however it just does not pull, and feels restricted with about 60hp! It will not pull through the gears, as though the brakes are being applied at the same time.
If I try to make any progress it seems to get hotter than it should.
The spark plugs are very sooty, but after taking them out last night they were white tipped as they should be.
Items checked so far:
The fuel pump and voltage to it have been checked- no problems.
Compression checked- fine around 175psi per cylinder.
It wouldnít appear to be losing water but maybe it isnít driven enough to be able to check that?
ECU has been swapped and this made no difference. Iím trying to remember what the smaller unit does? That hasnít been swapped.
So does anyone have any ideas or the best way forward?
Thanks for reading.