Lewtyn

Hi All,

I've swapped out my fuel filter this morning (possibly the first time in the cars 24 years) with the expectation that it would just turn over and start back up again. This hasn't proven to be the case.

Since I've only changed the filter, I'm struggling to see why, but it won't fire up gain. Turning over as usual.

I'm guessing I have an air lock and have ordered a hand pump that I will have on Monday.

Any suggestions in the meantime are welcome?

Thanks
Martyn

4evascoob

well if it were a diesel you’d just crack the injector pump or an injector , I’d of thought it would self bleed with enough cranking ? Otherwise I guess it’s just to bleed air as close as you can to combustion ? Fpr/ fuel line ?

4evascoob

you shouldnt need to bleed the system. Just turn the ignition on, let the pump prime, turn it off, turn it on again and let it prime, repeat a few times, and then try start the car.

Done a few pump swaps and its straight forward an simple.

If its not priming at all, i wonder if you have somehow managed to connect the pump up wrong? Re check the installation.

found from a previous issue with a pump change. As I thought you shouldn’t need to bleed as such it’s automatic give it a try

Lewtyn

Thanks for getting back. The impression I'm getting is that whatever has happened is a bit out of the ordinary!

I'm wondering if it's possible that the fuel pump motor has burnt out after turning over excessively while pushing against air in the system?

I've since tried disconnecting the fuel line on the incoming side of the filter and turning the ignition on several times to get the pump to prime but no fuel is coming though. I've got a hand pump to try drawing fuel through the system tomorrow so fingers crossed.

Fuel filter connections are in good order.

Best guess is it's either the pump or the pump relay which is conveniently stashed high up under the dash...

Lewtyn

I've not touched the pump as yet. Only the filter, which is in line and definetly connected to the lines correctly.

4evascoob

very bizarre , maybe a big chunk of air has got downwind of the filter and it’s pushing against it ? Should force it through though I’d of thought ? Have you tried priming and undoing past filter to see if fuel/air comes through ?

4evascoob

The filter wasn’t clogged ? And maybe you have inadvertently dislodged muck further up ?

Lewtyn

Possibly, yes. There is fuel in the line at the pump end. Could try flushing it, nice one!

Lewtyn

Turns out I've had a bizarre coincidence!

Just had an electrician call round, voltage to the fuel pump for priming is OK. Gave the top plate of the fuel pump a good few knocks and the pump/motor freed up!

Only worked once though, so I'm fitting a new pump tomorrow

4evascoob

glad you got to the bottom of it !