23 replies to this topic

[rolesyboy]

I did fit a new filter but there was such a lot of silt/scale in the tank I wonder if it has overwhelmed/destroyed it. Going to try a second filter and blow out the lines. Any further suggestions on isolating my problem.

[WillCarter]

Well if it’s not the sole problem then I think that flushing and cleaning out all the rubbish in the tank and fuel lines will certainly help.

[Fast Ivan]

I'd be checking the TPS

[rolesyboy]

Thanks. Any clue on how to test the TPS? MPIs are new territory for me.

[Sprocket]

Ive seen something similar on an SPI and it was the fuel pump. It wouldnt build pressure and dribbled fuel from an open end hose. Changed the pump for a known good one and away it went.

[rolesyboy]

Thanks Sprocket. After what might be a bit of a wild goose chase I pulled the fuel feed pipe off and ran the pump. I got what looked like 8psi. I think I should be expecting 40 psi plus. So the pump does operate but appears to be way short of what the system needs.

That was only a visual but the return also seems pretty dry. I have a new Walbro pump on hand and will fit this at the weekend. I reckon this will be my problem.

Appreciate your input. Mark

[Sprocket]

One other thing to think about is if youve had the tank out of the car, are the fuel hoses connected onto the correct outlets on the tank?.....

[rolesyboy]

Well as these threads often end up without a conclusion I thought I would provide an update. I changed the pump for a Walbro one, flushed all the lines and renewed the fuel filter. The car started immediately and runs like a sewing machine. The fuel pump was working but simply didn't have the output to run the car. 

RESULT. Thanks to all who have provided input. Mark

[WillCarter]

Glad it’s sorted without being anything expensive!