Running on.

[Dave_Knowles]

Hi,

I have had the whole top end of my AQ151A engine rebuilt. I have also fitted a completely new ignition system including a distributor. All the waterway have bee cleaned out and checked. In fact everything except the starter motor and carbs is new. The problem I am having now it is all put back together is that it runs on when the ignition is turned off. Has anyone any ideas as to why this might be?

Dave

<hr width=100% size=1>Take care
Dave
<A target="_blank" HREF=http://www.theboatjumble.co.uk>Visit The Boat Jumble - Online</A>

 

[Cymraeg]

Not sure of any ailments that may afflict your particular engine, but if it runs on for a second or two then cuts out this is usually due to excessive heat in the cylinder area i.e. insufficient cooling, very weak mixture etc. I have also seen some engines run continually due to faulty wiring in the ignition/charging system which allows power to bypass the ignition switch and keep the ignition components charged.

<hr width=100% size=1>

 

[Colin_S]

Presumably you've fitted new plugs too. Are they the correct ones?

<hr width=100% size=1>

 

[muchy_]

Timing?

<hr width=100% size=1>Is it the weekend yet?

 

[ArthurWood]

Dave - had this prob w/our (petrol) generator. It was due to overheating. I replaced the impeller and cured it.

<hr width=100% size=1>

 

[jon_bailey]

As well as all the suggestions below, carbon build up in the heads can glow causing running on (dieselling). Decoke or else trying letting engine idle for a few minutes before turning off.

<hr width=100% size=1>££££££££££££££££££££££££££££££££

<A target="_blank" HREF=http://home.btconnect.com/bailey>BOAT NO LONGER FOR SALE</A>

 

[KevB]

If it's not overheating then I agree with the timing theory. Ignition too far advanced maybe?

<hr width=100% size=1><A target="_blank" HREF=http://static.photobox.co.uk/public/images/45/99/10714599.s.jpg?ch=97&rr=16:00:39>Nirvana</A>

 

[itsonlymoney]

Almost certainly timing incorrect. You say you have had a new ignition system including Distributor. Kind of answers your own question me thinks.
Ian

<hr width=100% size=1>Play the best game you can with the cards you've been dealt ! ! !

 

[Dave_Knowles]

I have checked the timing and the dwell angle both are correct. I have also changed the plugs for Bosch (as per the Volvo manual) and it still runs on a bit. I think it must be the fuel side maybe mixture wrong. The twin carbs though scare me a bit.

Dave

<hr width=100% size=1>Take care
Dave
<A target="_blank" HREF=http://www.theboatjumble.co.uk>Visit The Boat Jumble - Online</A>