jorj

Ls1 full gas problem.
Up to 1/2 gaspower, the car works well. With fast throttle over there especially at speeds below 30 mpa does the engine hesitate, resulting in a downshift and a late engine speed without acceleration? Anyone who knows what the problem can be?

I have replaced spark plugs, fuel filters, cleaned injectors, controlled fuel pressure (58 psi), searched vacuum leakage, OBD shows no fault, air filter ok.

It feels like a fuel problem as the engine hesitates with heavy load. Can the fuel distribution be adjusted?

Thanks in advance

G Atsma

Let's try that again, only in terms that sound like you know anything about cars....

jorj

I'm afraid it may sound like that! The engine hesitates for a few seconds as if it was choking, then the engine turns up without the car driving forward? I have to let go of the gas for it to work normally again.