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Golf mkIV starts sometimes but randomly not others. Can run for two weeks fine, take a short trip, stop, go to start it up again and engine turns over but won't start. Wait 10 minutes and it fires up. Is it the Solenoid?
I've checked the wiring and can't find any problems, battery okay, fuel supply okay.
There is fuel in the fuel line that feeds the injector pump.
I haven't had a look. The trouble is that the problem is becoming less frequent, for example once a week, and there is less opportunity to do this.
No idea, I don't have access to a diagnostic machine. The next step is to approach VW if I can't fix the problem, but they will charge £80 just to plug the car into the diagnostic machine. My dilemma is spending cash on the car to keep it going for another 6 months or scrapping it. If there are components that I should take a look at, other than the fuel injection system, ECM then advice will be greatfully received.
The problem started after I left the car to stand for two weeks and it wouldn't crank. There was a lot of air in the fuel system but I had to replace the fuel filter a couple of weeks before becasue it split and I suspect that it still hadn't pushed all the air out. However, I had to jump start it becasue I ran the battery down trying to crank the engine. Usually I put the neg cable onto the engine block but with this car it didn't work so I basically jumped it terminal to terminal. The manual says not to do this because it can impact on the ECM.