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Do diesels need back pressure to start?

Posted: Wed Nov 10, 2010 5:47 pm
by Tubbs
Hi guys quick question, do diesels need back pressure to start?

Ive had to change a head gasket for a 2H and in the process ive snapped a couple exhaust manifold studs which I need to repair tomorrow. So Ive put the rest together and tried to start the car but the batterys are flat. So while Im charging them should I be connecting the exhaust up for the backpressure and remove it later for the repairs?

Cheers

Re: Do diesels need back pressure to start?

Posted: Wed Nov 10, 2010 5:49 pm
by oldmate
Nope. Diesels run better with no back pressure. Any back pressure will negatively affect the performance, both maximum power and torque curve.

Re: Do diesels need back pressure to start?

Posted: Wed Nov 10, 2010 6:03 pm
by Tubbs
Thanks for quick reply.

Will update my cactus 2H post when batterys are charged. Im not holding my breath but Im finally glad I got the time to put it together again. Its been a real mission and the bastard head has been fighting me every step of the way, and then the car joins in by giving me no juice to crank.