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Wont Rev Past 3000 Rpm


Best Answer rolesyboy , 05 November 2017 - 10:03 PM

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

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#16 rolesyboy

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Posted 30 October 2017 - 08:41 AM

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.

#17 WillCarter

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Posted 30 October 2017 - 08:56 AM

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.

#18 Fast Ivan

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Posted 30 October 2017 - 09:08 AM

I'd be checking the TPS



#19 rolesyboy

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Posted 30 October 2017 - 09:52 AM

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

#20 Sprocket

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Posted 31 October 2017 - 07:40 PM

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.

#21 rolesyboy

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Posted 31 October 2017 - 08:05 PM

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



#22 Sprocket

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Posted 31 October 2017 - 08:05 PM

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?.....

#23 rolesyboy

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Posted 05 November 2017 - 10:03 PM   Best Answer

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



#24 WillCarter

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Posted 06 November 2017 - 08:34 AM

Glad it’s sorted without being anything expensive!




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