M40 won't start - please help

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sb666
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Post Wed Jan 25, 2006 1:39 pm

Running fine 3 days ago
Battery fully charged
Cranks OK
Fuel pump checks OK
Has spark
Fires a couple of time after you stop cranking - seems to go backwards
Any suggestions?
Ant
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Post Wed Jan 25, 2006 1:48 pm

Battery fully charged
what did you use to charge it, I hope you've not used a booster pack ?

sounds like she may be flooded, pull the fuel pump fuse out, crank on wide open throttle for a few seconds, refit the fuse and try again

you may be lucky dude

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sb666
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Post Wed Jan 25, 2006 2:00 pm

ant wrote:
Battery fully charged
what did you use to charge it, I hope you've not used a booster pack ?

sounds like she may be flooded, pull the fuel pump fuse out, crank on wide open throttle for a few seconds, refit the fuse and try again

you may be lucky dude

welcopme to the zone BTW 8)
Thanks for the suggestion ant
When I removed spark plug was wet with fuel so I removed fuse 11 and tried with full throttle
The only difference did not fire at all
Refitted fuse and same as before
stuartgallafant
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Post Wed Jan 25, 2006 2:10 pm

eliminate all possibilities...

does it have fuel? yes...
does it have spark?
does it have compression?

take the lead off and spark plug out of cylinder one. push the plug back into the lead and rest the tip of the plug onto the suspension turret (earth point). now crank the engine, and you should have a spark.

-if you do, then you gotta check for compression.

-if you dont, then find out why:
-coil, king lead, dizzy cap, rotor arm, HT leads, and finally plugs. all of these have to be checked when looking for a spark. And always work backwards ie. plugs, then ht leads, then rotor arm, etc
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sb666
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Post Wed Jan 25, 2006 11:33 pm

ant wrote:
Battery fully charged
what did you use to charge it, I hope you've not used a booster pack ?

sounds like she may be flooded, pull the fuel pump fuse out, crank on wide open throttle for a few seconds, refit the fuse and try again

you may be lucky dude

welcopme to the zone BTW 8)
Gave up and left it over night
Checked pulse sensor ohms - OK
Tried to start again and with a lot of smoke etc she was away!!! :D
Must have been flooded after all
Many thanks

PS used 8 amp charger