Engine resonating

[Jockman65]

Hi

Tearing my hair out on this one.. Throughout the Rev range the engine will, the only way I can describe it, resonate, I.e sounding as if the exhaust is blowing, it does this intermittently even when stationary and in neutral. I thought possibly the alternator or turbo, but cannot pin it down. Any help on this would be appreciated.

Thanks, Jim in Portland Dorset

[Bongolia]

Wouldn't be the heat shield on the exhaust would it?

[rita]

Also check the clamp on the turbo, turbo hoses, particularly the one that runs in front of the engine, also check that the air filter lid is secure.Check the exhaust manifold for signs of soot or broken stud/s

If you happen to have a winter pack vehicle check the exhaust vale mechanism.

Good Luck.

[Northern Bongolow]

get someone to cover the exhaust outlet with their boot, see if this changes owt. push the entire exhaust forward. sometimes it does this when the exhaust bracket to the gearbox is loose or broken.

40-081 on this drawing.

http://lushprojects.com/bongopartsmk2/c ... mgno=.html.

has it got the winter cold start switch.??

piped to the post by rita.

[Jockman65]

Thanks to everyone who replied, lots of useful leads. Looks as if I'll be diving headfirst into the engine bay tomorrow. I'll keep u posted.