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Do diesels need back pressure to start?

Tech Talk for Cruiser owners.

Moderators: toaddog, Elmo, DUDELUX

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Posts: 25
Joined: Wed Aug 11, 2010 4:32 pm
Location: Perth

Do diesels need back pressure to start?

Post 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
Posts: 1383
Joined: Tue May 06, 2008 8:12 pm
Location: Newcastle

Re: Do diesels need back pressure to start?

Post by oldmate »

Nope. Diesels run better with no back pressure. Any back pressure will negatively affect the performance, both maximum power and torque curve.
The worst part about being told you have Alzheimer's, is that it doesn't just happen once.
Posts: 25
Joined: Wed Aug 11, 2010 4:32 pm
Location: Perth

Re: Do diesels need back pressure to start?

Post 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.
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