16v Bigport fuel problems

[jondee86]

Facts...
- pump is running.
- engine is getting fuel, but most times does not run.
- engine runs sometimes, but rich.
- after crank and no start plugs are wet.
- no fuel returning to tank.

Probable cause...
- fuel pressure regulator is blocked/stuck closed.

Theory...
- a blocked FPR will cause rail pressure to reach 70psi or higher.
- high rail pressure will cause the engine to run extremely rich.
- mixture richer than around 8:1AFR will not burn.

Conclusion...
- starting mixture is too rich and engine floods.

Action required...
- replace FPR.
- install fresh spark plugs.

Let me know how you get on

Cheers... jondee86