I have a 1998 classic, from cold the car starts perfect but when it's warm the car just turns over and won't fire up, I do manage to get it started eventually but I have to press the accelerater pedal at the same time, any suggestion would be great, thanks 👍 😀

 

Fuel vaporisation? Weak pump? Coolant temperature sensor?

 

warm start issues are often caused by a faulty cam sensor........

 

How would I stop/what would cause fuel vaporisation? Thanks 👍

 

It was just a thought as high underbonnet temps could cause the fuel to vaporise. In theory shouldn't happen if the system is holding pressure. If there are old fuel lines they may be allowing the system to depressurise but going through all the cotton braided pipes is a pain in the ****. You'd possibly smell it too.

Cam sensor is a good shout as above, high temps causing a signal breakdown in the wiring.

Is it over fuelling that's causing the poor starting? Is it rough when it does catch and a bit smokey (black)? If so could be coolant temp sensor causing the car to start as though its cold and over fuel.

 

Doesn't seem rough when it's finally starts, not sure on smoke, I'll have a look next time, just seems strange that I need to press the accelerater to get it to start otherwise it will just keep turning over. Starts straight away when it's cold.

 

I'll bet my life it's injector seals. The fuel leaks passed the seals and essentialy floods the manifold with vapour. Left overnight it clears.

Does it need the accelerator on the floor to start it when warm? This is the way you start a flooded impreza.

 

How much does it cost to replace the injector seals? It's not something I could do myself so I would be taking it to a garage?

 

Seals are £30 from Import Car Parts.

Easy enough to do yourself. Make sure there is NO fuel pressure in the rails when popping the injectors out.

Vaseline on the seals helps them slide back in.

 

£30 for classic injector seals?? maybe we need to up out pricing..............

 

Looks like AS Performance may sell them for less than £30. 😂