engine wont start after new fuel tank and pipes been install

[ocram]

hi i have got an e30 m3 and have recently had a new fuel tank and fuel hose replaced , now the engine wont start. the mechanic said the engine started for about 2 seconds then cut out. he says that fuel is definently getting through. any advice would be gratefull. MARCO

[E30BeemerLad]

can you be 100% positive the pipes are on the right way round?

Wiring to the pump correct?

DME relay?

[anisotropy]

Take off the feed in engine bay, crank the engine, check fuel comes out -don't trust the mechanic.

[Brianmoooore]

The fuel pipe that comes from the fuel filter should connect directly to the fuel rail, not the fuel pressure regulator. This is also the pipe that fuel should come out of if you disconnect it and crank the engine.
Any mechanic worthy of the title would have already done exactly this.
Also, pull out the fuel pump relay, link together pins 30 and 87 of its base with a short piece of wire and listen to hear the whine of the fuel pump. Should be a steady flow of fuel from the pipe disconnected from the rail when you do this.

[JimmyC]

Another guess is he's done exactly what I did the other day with mine

I crushed the main feed pipe that goes across the top of the tank, theres a gutter it should run through and I managed to let it slip out whilst putting the tank up (tape works a treat with hindsight!!)

Easy way for him to check is drop the tank just by undoing the 3 bolts on the pax side and try running it again

If it is that, you can get in there by undoing all 5 fixings without dropping the tank completely

[JimmyC]

BTW I had SOME fuel getting through but not enough to keep it running

[daimlerman]

Did you fit a new fuel filter?With disturbing the old one it may have stirred up crud trapped in it...

[E30Dale]

when i changed my fuel tank i traped the main fuel feed pipe, engine started then cut stright out.
you might want to try double checking the fuel pipes