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will not idle and seems to run on 3 cylinders
Posted: 16 Sep 2009, 19:44
by paulwaterer
I have a 1.9dg running on lpg.
It starts fine and drives well for 5 - 10 miles then all of a sudden it will not idle and seems to run on 3 cylinders.
I have fitted new Ignition coil,plugs,leads,rotor arm and dizzy cap but with no joy.
Please does any one have any ideas.
Thanks
Re: will not idle and seems to run on 3 cylinders
Posted: 16 Sep 2009, 20:03
by alkers
Carbs! As far as I am concerned the root of all (my) problems!! Maybe trouble getting fuel to engine?
Re: will not idle and seems to run on 3 cylinders
Posted: 16 Sep 2009, 20:05
by ricicles
is it doing it on both petrol and lpg?
Re: will not idle and seems to run on 3 cylinders
Posted: 16 Sep 2009, 20:08
by paulwaterer
It does it on petrol anf LPG
Re: will not idle and seems to run on 3 cylinders
Posted: 16 Sep 2009, 20:16
by ricicles
what s going on when it warms up then? the choke should be full open after that time, worth checking that the waxstat is working, if its not then it will run to rich when hot. you did not mention plugs, are they good.other than the waxstat i cannot think of anything else that would cause both lpg and petrol to have probs.
Re: will not idle and seems to run on 3 cylinders
Posted: 16 Sep 2009, 20:20
by t25darren
Dump the LPG! its trouble with a capital T
seriously, sounds like it could be a compression problem? Have you tested each pot?
Darren
Re: will not idle and seems to run on 3 cylinders
Posted: 16 Sep 2009, 20:26
by paulwaterer
A compression test has already been done
Re: will not idle and seems to run on 3 cylinders
Posted: 16 Sep 2009, 20:33
by ricicles
what was the result
Re: will not idle and seems to run on 3 cylinders
Posted: 16 Sep 2009, 20:35
by paulwaterer
They were all around 110 lb
Re: will not idle and seems to run on 3 cylinders
Posted: 16 Sep 2009, 20:52
by ricicles
says 11 to 14 bar in the book with a max difference of three bar between them. dunno how that works out with the figures you have. check the waxstat and see if it is opening fully when the engine is hot then you can forget that bit.
Re: will not idle and seems to run on 3 cylinders
Posted: 16 Sep 2009, 21:06
by toomanytoys
Sounds electrical.. unplug and clean the connections to coil, ignition module etc.. worth cleaning the earth to the head (brown wire) also.. Presume it was doing this before the parts swap?
Re: will not idle and seems to run on 3 cylinders
Posted: 16 Sep 2009, 21:09
by paulwaterer
Surely if the a compression was down it would not run like a dream for a long period of time.
Today it started to do it ,so i turned it off , restarted and it was ok
Re: will not idle and seems to run on 3 cylinders
Posted: 16 Sep 2009, 21:43
by sendiw
Could be an air intake problem.When the engine has warmed up the air stream is redirected for cooler air. Check out the cold air intake venting could be blocked with leaves or something.
Re: will not idle and seems to run on 3 cylinders
Posted: 17 Sep 2009, 18:44
by paulwaterer
i have removed the oil breather pipe ,because i noticed it had gone gungy and had collapsed in the middle.Took the van for a run and it seems ok.Touch wood
Re: will not idle and seems to run on 3 cylinders
Posted: 20 Sep 2009, 13:03
by BOXY
Have you checked the points gap? If the gap has started to close it could be the cause of the mis-fire?