Poor starting

eadmr04

eadmr04

Member
I've had some problems recently and it appeared that I might have had an air leak in the fuel lines (bubbles visible in the fuel pipes) and the fuel in the filter was virtually non-existant. I've now just had an facet electric pump fitted which has been wired to the oil pressure switch for safety and also had them points gap reset (it had closed up slightly). The fuel flow seems ok now but.....

The car seems to run ok but once it's warm and you stop, when you try to re-start it, it takes quite a lot of cranking and mucking about with the throttle to get it started. Once it's fired up it sometimes won't tick over and stalls. If I keep trying I eventually get it started it seems to settle down and is ok. Any suggestions?
 
Maybe it's because the oil pressure switch doesn't cut in till the engine starts. Try wiring it up to a permanent supply and see if it's any different .If so , think of fitting an inertia switch instead
 
The best way to wire the pump is through the oil switch, and also take a supply from the starter so as the engine cranks the pump works. Then when the engine starts and the supply from the starter stops, the one from the oil switch takes over.
 
That sounds like the original problem was fuel vapourisation, which the electric pump should help to prevent, by pumping fresh fuel round the system before starting.

As Harvey says you need a feed that cuts in before the engine starts. In modern cars the ECU usually runs the pump for a few seconds when you turn the key to the ignition on position, to make sure the pressure is up.

As Dave says, another option is to wire it so the pump runs when the ignition is on, but you should fit an inertia switch to kill the pump in case of an accident, again all recent cars have them so you can source one from a breakers.
 
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