RichardK
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| posted on 20/10/07 at 06:18 PM |
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What is normally the cause of an engine running on?
Just been running my engine for 20 minutes to bed in my cam and check the cooling system all of which went ok, fan kicked in and went off after a
while.
Wanted to check the timing but my strobe light seems to be knackered 
So in general quite pleased, but when I came to switch off the engine by using a switch connected to positive of my megajolt.
So megajolt off and engine carrys on running for a good 10 seconds.
Any ideas where to start, have just bought a vernier pulley as I'm running an fr32 cam, think thats what is was I bought off Mooky a while back.
Haven't got round to fitting it though.
Cheers
Rich
Gallery updated 11/01/2011
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Macbeast
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| posted on 20/10/07 at 06:33 PM |
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Check to see if plugs are sooty. Could be carbon deposits in the cylinders. These could be caused by timing error causing incomplete combustion or
mixture too rich
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roadrunner
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| posted on 20/10/07 at 06:33 PM |
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Engine too hot.
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britishtrident
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| posted on 20/10/07 at 06:36 PM |
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Most likely needs timing and idle speed set but it could be any of these
Fuel quality, ignition tiiming, excessively weak mixture, idle speed too high, inlet mamifold air leak, over heating, excessive carbon build up.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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MkIndy7
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| posted on 20/10/07 at 06:40 PM |
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And if it isin't any of those... our megasquirt ran on because it was being backfed from the alternator charge light!
Turning the key on and off the power was switched on and off correctly.. just when the engine had ran the alternator kept it live.
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RichardK
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| posted on 20/10/07 at 07:54 PM |
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Plugs are a chocolate brown colour, so ok.
Haven't got the alternater connected.
As it was a second hand cam shaft I havn't got a cardboard timing wheel.
Do I need one? If so...
Can anybody tell me in simple terms how to use it.
Could this be the problem? Basically just stuck it in and as it's got a key fitment and the original pinto pulley has a arrow on indicating TDC
just aligned it all up using that.
Your thoughts please.
Rich
Gallery updated 11/01/2011
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Macbeast
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| posted on 20/10/07 at 08:03 PM |
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Don't confuse camshaft timing with ignition timing
Nice useful pitures BTW (y)
[Edited on 20/10/07 by Macbeast]
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mookaloid
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| posted on 20/10/07 at 08:04 PM |
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Igniton retarded would be my favourite
Cheers
Mark
"That thing you're thinking - it wont be that."
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TGR-ECOSSE
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| posted on 20/10/07 at 08:10 PM |
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quote:
Originally posted by mookaloid
Igniton retarded would be my favourite
Cheers
Mark
I would say so as well. Just had the same problem on a peugeot engine while trying to set it up the ignition timing.
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big_wasa
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| posted on 20/10/07 at 08:31 PM |
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Does your switch cut the power to the edis aswell as the maegajolt ?
The edis4 will run the engine without the megajolt 
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RichardK
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| posted on 20/10/07 at 09:14 PM |
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/\/\/\ Yes it does, must get a new strobe light, bugga or maybe check the bulb 
Cheers for the replies, think the plan will be once I get a timing light sorted move my toothed wheel until timing is bang on and not just put the
sensor 90 degrees btdc. Then fine tune it.
Cheers for the help so far.
Regards
Rich
Gallery updated 11/01/2011
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Paul M
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| posted on 20/10/07 at 09:18 PM |
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was your engine fan running when you switched off ? if it was this can create a back EMF that gives enough current to provide a spark, engine runs on
until all unburned fuel is used up. Cured on mine ( and many other Westfields) by fitting an isolation relay to the engine fan
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Tim 45
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| posted on 20/10/07 at 09:19 PM |
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Is it running rough or as normal?
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the_fbi
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| posted on 20/10/07 at 09:35 PM |
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quote:
Originally posted by Paul M
was your engine fan running when you switched off ? if it was this can create a back EMF that gives enough current to provide a spark, engine runs on
until all unburned fuel is used up. Cured on mine ( and many other Westfields) by fitting an isolation relay to the engine fan
I'll 2nd that one.
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andyharding
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| posted on 21/10/07 at 07:31 AM |
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Most common cause is too weak mixture causing the engine to get too hot.
Are you a Mac user or a retard?
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RichardK
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| posted on 21/10/07 at 04:55 PM |
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Fault was with ignition being far too retarded, fixed my strobe light and got the toothed wheel fine tuned and all seems well.
Thanks for all of the suggestions.
Cheers
Rich
Gallery updated 11/01/2011
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