No-idea what's happening to my engine-

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CBA
Posts: 1071
Joined: 24 Mar 2010 02:14 am

No-idea what's happening to my engine-

Post by CBA » 11 Apr 2013 12:31 am

Here we go:
1.7 @200k miles ish.

Cold morning: Full choke, turn key - fires almost instantly in that snow-covered volvo way.
Car idles a little unsteady but not concerning.
Once engine is warm and I'm off choke this happens:

Past 50% throttle over 3000 revs the engine gives a nasty continuous grating noise, I'm not sure if its preignition or detonation or a loose component,when the grating gets noisier it does seem to sap power e.g. more accelerator(past halfway) = less power.

To me it sounds like a really OOB thing on a shaft with loose bearings ragging itself to bits?? like a worn viscous coupling, doesent "roar" though, it's grating. sm93

classicswede
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Re: No-idea what's happening to my engine-

Post by classicswede » 11 Apr 2013 08:24 am

Secondary carb jet blocked? I suspect your issue could be only there when the second flap opens?

Have you made sure that no of teh pipes etc have fallen apart?
Dai

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CBA
Posts: 1071
Joined: 24 Mar 2010 02:14 am

Re: No-idea what's happening to my engine-

Post by CBA » 11 Apr 2013 02:31 pm

pipage is all good, no vac leaks no fuel leaks. I'm tackling it soon just thought it might strike a chord with someone.. will whip out the jet :)

Ride_on
Posts: 2262
Joined: 26 May 2009 05:34 pm
Location: Belfast, N. Ireland

Re: No-idea what's happening to my engine-

Post by Ride_on » 12 Apr 2013 01:44 am

More accelerator = less power

And its not a weak spark ie missing badly?
1980 345 DL_______1987 360 GLE (project car restored to GLT spec and B230FT'd)
1984 360 GLT______1987 360 GLT
1983 360 GLS______1989 360 GLE
1985 340 GL_______1986 340 1.4
1985 360 GLS______1995 940 SE 2.3 Turbo Estate (daily)
1987 340 GL 1.7

CBA
Posts: 1071
Joined: 24 Mar 2010 02:14 am

Re: No-idea what's happening to my engine-

Post by CBA » 12 Apr 2013 02:00 pm

hmmm.. my battery is goosed e.g. needs a push first thing. got a few ideas now, cheers.

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