Starting issues on 806 HDi

Apr 01, 2006 2 Replies

Has anyone any suggestion on the following problem. My 806 HDi will not start. Having checked everything all seems OK. I then sprayed a small amount of oil into the air intake and the engine started and ran fine. Even when the engine was hot, once stopped it would not start until I sprayed oil into the air intake!!! Any clues or help would be appreciated. My local dealer has suggested a problem with the diesel injectors and has quoted a huge sum. I cannot see how it could be the injectors if the engine runs OK???



Air in fuel system, low cylinder compressions. injection pump timing incorrect, this is what a haynes says about a engine difficult to start when hot,(missed one) air filter element dirty or clogged. from chris Addlestone Surrey

I would guess at this being the priming pump in the fuel tank.

When you turn the ignition on, you should hear a short buzz of about 5 seconds, this is the fuel system priming up ready.

If this pump does not prime the car will nor start.

The failure of the priming pump is a common problem for all of the HDI engined cars, try turning on the ignition then laying down under the car and give the bottem of the fuel tank a good hard slap, sometimes this alone will get it to prime, but usually only to fail again next time!!

Regards Slim

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