Aller au contenu principal

The LB7 Duramax is a 32-valve V8 diesel engine produced from 2001-2004.

3 questions Voir tout

crank no start: no codes, no fuel at primer, rattle from engine

2002 6.6 lb7 Duramax will not start. Engine was making rattle sound. Sounded almost like a sheet metal vibration but RPM sensitive, coming from low in engine.. There are no codes. Not getting fuel at primer bleed off. no signs of water in fuel. Thanks, Terry

Répondre à cette question J'ai le même problème

Cette question est-elle utile ?

Indice 0
Ajouter un commentaire

2 Réponses

These trucks have an injector pump that's driven off the main timing gear. It's in the front of the engine in the valley. So if you heard noise coming from under the hood or front before it stopped running and you have no fuel pressure now while cranking it sounds like your injector pump took a crap. What u can do to verify lack of fuel is get a small rag and wet it with gasoline not diesel and hold it infront of the throttle body. My buddy has a twin turbo duramax and I've helped him pull the motor a few times and he's showed me a few little tips n tricks. A few drops of gas should start it up. U also can check the fuel rail for pressure with a gauge but if u don't have 1 on hand the gas rag can confirm no fuel.

Cette réponse est-elle utile ?

Indice 0
Ajouter un commentaire

broken crankshaft...

Cette réponse est-elle utile ?

Indice 0
Ajouter un commentaire

Ajouter une réponse

Terry sera éternellement reconnaissant.
Nombre de vues :

Dernières 24 heures : 0

7 derniers jours : 6

30 derniers jours : 9

Total : 1,306