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Engine run on???

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FROSTY Insano Dub Head

744 posts · joined May 2009 ·

#885184
Hi There, i have an issue of the engine running on after the ignition is switched off. Its a 1600 with stock coil and distributor, 36mm single Dellorto, counter weighted crank, 110 cam. The run on normally isn't too bad but enough to give me the shits...
Thanks
Jason.

Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 ·

#885187
has it always done it??
Futue te ipsum!!!

AA003 Custom Title Time!

1,189 posts · joined Oct 2011 ·

#885189
What type of fuel are you using?
I read it on samba, so it must be correct.

Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!😂

FROSTY Insano Dub Head

744 posts · joined May 2009 ·

#885191
Hi guys, Yes it has always run-on (sometimes quit bad and others just barely) and i'm running 95 pump gas ( i don't run the lower or blended fuels) I don't do to many K's in the beetle ( 50-60 per week) i have just been reading it could be the spark plugs, idle's to quick or timing can be a little off. I will try a couple of thing tomorrow.
thanks
jason

LUFTMEISTER Veteran Volks Folk

2,041 posts · joined Jul 2005 ·

#885194
Check shut off solenoid on carb.
Customer service is not dead in Australia.

Always after HAZET & MATRA & VW factory tools

AA003 Custom Title Time!

1,189 posts · joined Oct 2011 ·

#885195
LUFTMEISTER wrote:Check shut off solenoid on carb.
Do Dellortos have them?
I read it on samba, so it must be correct.

Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!😂

tar76 Custom Title Time!

1,622 posts · joined Dec 2009 ·

#885207
Also check idle maybe a bit high?
"Obey your Dreams"!


62 Std beetle.
65 11 wnd Split "The Cross".
6? coming very soon!!!!

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#885244
Generally it's because the CR is too high. Keep it in gear and slide a little clutch out as the engine is turned off. If you let it run on, they often break the crank in two.
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DubCty Slammed & Awesome Dubber

95 posts · joined Jun 2009 ·

#885314
I have had the same problem in another air cooled engine of mine, it was caused by a build-up of carbon in the expansion chamber this holds the heat and causes the engine to diesel after the ignition is turned off.

Have you noticed any pre ignition when the engine is running?

As far as fixing it Id try taking the car for a long run and hoping it may remove some of the carbon, failing that remove the heads and have a look.

Just my 2cents, AL🤪
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