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20 Apr 2007
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Registered Users
HUBB regular
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Join Date: Jan 2002
Location: Scotland
Posts: 66
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3AJ not starting
Hi there, Ive just had the head replaced on my 3AJ, the newer head is also a 2kf, but I cant get it to start reliably with the tappets set to the recommended settings. It will start with them opened up, but not when set to the correct tolerances.
Its driving me nuts, any ideas?
Pete
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20 Apr 2007
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Join Date: Jan 2002
Location: Scotland
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Panic over, the mechanic did the head just tightened the tappets and jump started it from a landrover and its sweet as.
Sorted
Pete
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21 Apr 2007
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Join Date: Jan 2002
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Quote:
Originally Posted by Basspete
Panic over, the mechanic did the head just tightened the tappets and jump started it from a landrover and its sweet as.
Sorted
Pete
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Went to pick the bike up last night and it wouldnt start whatever. Going to try a new battery today hopefully. Seems to have a weak spark, should a new battery help this? We checked the wiring and tidied up some connections, but the spark is still weak. Also swapped the coil but it didnt make any difference.
Pete
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21 Apr 2007
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Join Date: Jan 2001
Location: Stockholm
Posts: 651
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No
The 3aj does not need battery power to run. If you have a spark, any spark, that should be ok.
Since you just replaced the head, make sure everything is connected and installed allright, valve timing ok, fuel arriving at the carburettor (with the fuel pump this can sometimes be a problem!), idle mixture set correctly, idle speed set correctly etc.
Give some more info, we might be able to help.
Auke
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21 Apr 2007
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Hi there, thanks for that. We are getting fuel, and have sparks. The valve timing was checked when the head was replaced. The bike will run fine when it does go, but its getting it to start thats the problem. When it wont start, the bike will sometimes backfire as if there is unburned fuel in the engine. I was going to try the battery, as I have found myself, if the battery isnt great, the electric start wont fire the engine. Any other ideas?
Pete
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21 Apr 2007
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When the bike was running it was ticking over fine, but seemed a little high. What should the tickover be set at?
Pete
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