heres a copy of what alex sent me and my reply, he explains more clearlly the problem in the pm, should anyone else have any other ideas!
Quote:
Originally Posted by alexpulsar
hi there, ive not been on this site long but you seem to know what your talking about with the how deep r your pockets motor.i just wanted ask you about serious over fuelling as mine is, it will not tick over, plumes of black smoke pure oetrol id say. It pops and bangs very loud if you attempt to rev it to much. ive got a 255 pump and FSE power boost valve std injectors. my vacum pipes r in a bit of a mess and my brake pedal has no ressitance,almost like no vacum to servo ?? it was alright before xmas when it went in to have new oil pressure relief valve as i lost oil press on idle occ on tick over only. I had to also replace my main bearings as the oil problem took them out. but thats all been sorted good oil press etc also checked compression and all is a ok. its had new forged pistons rings from wossenor .and complete engine build cams 264 etc etc.the engine centre has set the timing when they built the engine and shimmed the valve cleartences to 0.14 on both bankas and all run ok for a good 1500 miles till all these problems have occured.im sorry if im putting on you but im so rubbish on this owners site as im rubbish with computers but if you can help me or do some fishing about i would be in your debt best regards alepulsar.:shock:
hi alex
first of all, if they have set the valve clearance to 0.14 between rockers and cam clearance then that is wrong! this measurement hot should be 0.30-0.35mm on both banks. as per thread if it appears like its running intermittently on 2 cylinders then this could well be part of the problem.
secondly when you say your brake pedal has no resistance (as if no vacuum) do you mean you have to stamp on the pedal to get vehicle to stop! or have you got excessive pedal movement?
what rpm will the car rev to before it starts choking up?
you also say your vacuum pipes seem to be in a mess!!! whys that, are there any open pipes, disconnected pipes etc?
as per thread the afm could well be the part of the problem with your overfuelling, but really need a little more info with regard to the other bits you have described, before a better diagnosis can be achieved.
i do however strongly advise you not to run the car untill this is sorted out or you will end up wrecking your newly built engine through severe borewash, which will cause pistons / rings to tear the cylinder walls apart and wreck the pistons also.
after this problem is sorted, change the engine oil also as you will have contaminated oil with fuel traces in it.
i will paste this up on the thread so you and others can view it on there, as someone else may also have some other ideas as you have explained more here than on the thread you put up.
cheers
bob