(14-07-2014, 08:30 PM)Slam Wagon Wrote: Youve changed the pump but what about the electrics, they all good?
the electrics are fine i have checked them with a multimeter buddy
(14-07-2014, 09:09 PM)Poodle Wrote: Definitely worth checking over your electricals before going any further, it starts to get expensive at this point.
Tbh it was always more than likely that the hp pump was going to be below par, the crap fuel will have damaged seals, not provided proper lubrication, etc. I'd suggest replacing the HP pump, as it's so rarely injectors causing this sort of issue. Perhaps leak-off test the injectors first, just to have an idea of how good/bad they are.
I seem to remember you're planning on tuning so the chances are you would have had to do this anyway, i've been there and it's painful but the end result is well worth it imo. If you end up having to go there you may as well upgrade with an R70 too tbh, the cost of a refurb r70 unit is very similar to the cost of a stock refurb.
It wont cost alot tbh as i have another 5 sat here (dont ask) so i can pull bits from them if needed, only thing im struggling with is a fpr as i only have one spare..
As to tuning buddy, i will be doing another one as the diablo is know a friends car as theres was written off so there is no plans for stage 2 on it for the near future..
I thought hp pump but wondered if the rail sensor had not sealed properly?
(16-07-2014, 11:53 AM)pro_steve Wrote: I would clean the fuel pressure regulator again, if you've used crap fuel you'll hav3e dirt in the system and the regulator will get problems frequently. Make sure the seals are good too.
I would also recommend running an injector leak off test. Bad fuel will wreck the injectors very quickly. If the leak off values are all different then it would indicate you need a new set of injectors too.
Try this and update us and we can advise further.
I have tried several different fpr's and had it out again a few days ago, was tempted to get another one if i can find one..
I have done a leak of test a few months ago and the test showed one to be down slightly on all the rest but i suppose it cannot harm to do another one..
However i have got two other things to add which may help:
When the car cuts out its always after a bend (either way), changing speed from lower rpm to higher or sometimes when letting off to slow down. When you try and restart it you cant bump it, i have then tried turning the key back on but the lift pump does not prime it makes no noise. The only way i have found to get it going again is to take the keys out then put them back in and prime the fuel pump twice and it comes straight back to life. hope this helps?
Also it runs better when its cold, the warmer it gets the worse it gets.. I did also notice this morning from cold it wasnt idling 100% it sounded slightly off on an injector to be fair, the revs sounded like they dropped off a bit and the car was hunting, like a misfire if that makes sense?
Think i may do a leak of test on it before i change the pump as i have some injectors spare fromt he engine that slipped the belt.
Any help or input is more than welcome people and thanks for the help so far
DAN