340 1.7 wont start

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Matthias
Posts: 6
Joined: 03 Nov 2015 07:24 pm

340 1.7 wont start

Post by Matthias » 11 Dec 2015 05:03 pm

Hello
I have a volvo 340 from 87 with the 1.7 engine.
It used to run like crap but now its even worse..
Normaly i could start and drive but when i give full throttlethe engine starts shocking. When i push the gas pedal now the whole car is shokking and finaly the engine starts to backfire and dies. Then i cant start it anymore..
I already cleaned the carb but no result.
Anyone have any tips?
Greets matthias

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bogbasic
Posts: 1496
Joined: 21 Nov 2004 10:12 pm
Location: New Malden, Surrey.
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Re: 340 1.7 wont start

Post by bogbasic » 11 Dec 2015 07:56 pm

Hello Matthias,

It sounds like it could be dampness on the leads which some WD40 might cure, although don't try spraying it on with the engine running, or you might get a flash of burning aerosol if there is a spark. A clean inside the distributor cap can work wonders.

Also, likely to be the idle solenoid on the carburettor which causes the engine to die at low speeds. Does it click when you connect/disconnect it with the ignition switched on, but without the engine running? It could be the Renix unit, but I have not known them to fail on my cars, although I have read that they do.

ttfn, Bog.
1988 340 1.4 GL, 218k, 5 door (Grey Bess). Gone to CBA.
1991 340 1.7 GL, 64k, 5 door, petrol blue (Deep Blue).
1988 360 2.0 GLE, 140k, 5 door, ocean blue metallic (Blue Bess).
1989 340 1.7 GL, 108k, 3 door (Red Ness).
More info here!

Ride_on
Posts: 2256
Joined: 26 May 2009 05:34 pm
Location: Belfast, N. Ireland

Re: 340 1.7 wont start

Post by Ride_on » 12 Dec 2015 01:19 am

Could also be be a weak spark caused by oil leaking into the distributor. Bit of a problem with cam disti's
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

Matthias
Posts: 6
Joined: 03 Nov 2015 07:24 pm

Re: 340 1.7 wont start

Post by Matthias » 14 Dec 2015 08:12 pm

I think it's the distributor cap.. Checked it and the inside was burnt a little and even a little bit melted..
Strange becouse i replaced it 2 months ago.
But the a new one is on its way so i hope it will be fixed.
Thanks for the tips!

Matthias
Posts: 6
Joined: 03 Nov 2015 07:24 pm

Re: 340 1.7 wont start

Post by Matthias » 15 Dec 2015 10:42 pm

Replaced the distributor cap and she runs again :D
Thanks for the help

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