760 Turbo behaving badly

Aristophanotle · Aug 28th, 2005, 20:48

86 760 Turbo B230ET recently developed bad idle and knocks when under load.loosing power Have changed distributor cap & leads with no improvement. I think the problem may be with the fuel injection (monotronic) Help!

Mike_Brace · Aug 28th, 2005, 22:16

Not really enough info - knock could be broken engine mount or something more serious. Bad idle could be air leak or blocked breather.
The two together (depending on type of knock) could be terminal but equally it could just be the possiblities above. Suggest you look at these and post back!

Mike

Aristophanotle · Aug 29th, 2005, 20:50

Thanks for the reply Mike. Spent most of the weekend going through the possible causes but it now looks like there is a compression problem on cylinders 2 & 3.Difficult to start and pinks like hell in the middle of the rev range when under load. Suspect that there may be a couple of burt valves in there somewhere.:-( I think its terminal.

Mike_Brace · Aug 29th, 2005, 21:54

No harm in whipping head off - if its done over 150k its probably better to fling in good s/h engine (I've got one). Best of luck!

Mike

Aug 28th, 2005, 20:48	#1
Aristophanotle New Member Last Online: Oct 2nd, 2012 08:22 Join Date: Dec 2004 Location: Bath	760 Turbo behaving badly 86 760 Turbo B230ET recently developed bad idle and knocks when under load.loosing power Have changed distributor cap & leads with no improvement. I think the problem may be with the fuel injection (monotronic) Help!

Aug 28th, 2005, 22:16	#2
Mike_Brace Former contributor Last Online: May 15th, 2024 09:52 Join Date: Dec 2004 Location: Rhosgoch, Anglesey	RE: 760 Turbo behaving badly Not really enough info - knock could be broken engine mount or something more serious. Bad idle could be air leak or blocked breather. The two together (depending on type of knock) could be terminal but equally it could just be the possiblities above. Suggest you look at these and post back! Mike __________________ A Volvo is for life not just for Christmas!

Aug 29th, 2005, 20:50	#3
Aristophanotle New Member Last Online: Oct 2nd, 2012 08:22 Join Date: Dec 2004 Location: Bath	RE: 760 Turbo behaving badly Thanks for the reply Mike. Spent most of the weekend going through the possible causes but it now looks like there is a compression problem on cylinders 2 & 3.Difficult to start and pinks like hell in the middle of the rev range when under load. Suspect that there may be a couple of burt valves in there somewhere.:-( I think its terminal.

Aug 29th, 2005, 21:54	#4
Mike_Brace Former contributor Last Online: May 15th, 2024 09:52 Join Date: Dec 2004 Location: Rhosgoch, Anglesey	RE: 760 Turbo behaving badly No harm in whipping head off - if its done over 150k its probably better to fling in good s/h engine (I've got one). Best of luck! Mike __________________ A Volvo is for life not just for Christmas!

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