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  #11  
Old 23rd July 2012
carbineken's Avatar
carbineken carbineken is offline
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Quote:
Originally Posted by Mosey View Post
When ya know yer gonna hafta do a warm start, shut off the petcock and let it idle for a few seconds before ya shut 'er down. Turn on the petcock after re-starting yer bike. This is what my old FX wants when it's really hot.
This seems to have done the trick. My petcock is leaking in the off position so I'm going to replace it but until then I put an inline shutoff from a lawnmower on it. All day saturday, one kick starts following mosey's method.
Also got my hands on a Mikuni VM38. It needs to be overhauled and is missing a few things but with the knowledge here I should be able to get it going.
Thanks everyone.
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  #12  
Old 9th July 2013
Scotts73 Scotts73 is offline
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Mosey...Hopper....You guys are right on the money as to how to kick start a warm ironhead. Out running around today in 90 degree heat. Shut off fuel before parking. Started one kick every time!
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  #13  
Old 9th July 2013
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Quote:
Originally Posted by carbineken View Post
This seems to have done the trick. My petcock is leaking in the off position so I'm going to replace it but until then I put an inline shutoff from a lawnmower on it. All day saturday, one kick starts following mosey's method.
Also got my hands on a Mikuni VM38. It needs to be overhauled and is missing a few things but with the knowledge here I should be able to get it going.
Thanks everyone.
I would Never replace a good working Bendix...ever.
If you want rid of it...[the Bendix Carb], LMK
RP
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  #14  
Old 9th July 2013
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the only way shutting off the petcock would matter at all, is if you turned it off, then ran the carb and hose out of gas.

is that what you mean?

the reason for the hard hot starts is indeed the heat building in the engine & carb after a hot run and shutdown-this causes a LEAN condition in the cylinders, not rich.
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  #15  
Old 9th July 2013
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I completely forgot about this thread. Lol. I have since replaced the Bendix with the Mikuni and the bike has been a 1 or 2 kick start under any condition since, got even better with fresh jugs, pistons and rings. The Bendix was getting hot after shutdown and fuel was being forced out the main jet, flooding the engine in just a matter of minutes. Turning the fuel off before shutting down did help but was not 100%.

Sorry Racepres, if there is anything I have learned since owning this Ironhead....it is to have a spare....everything! So I'll be hangin' on to the old Bendix carb.
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  #16  
Old 9th July 2013
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Fire it up, warm it up. Let it sit. Try to start. No start after 10 kicks, do a compression test. Or even better, a leak down test, if you have access to a leak down tester. You know the cold compression, now, see what the hot compression is. If you loose a lot of psi, check the push rods. If they don't spin, then, that is the problem.
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  #17  
Old 9th July 2013
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i,have to agree with the,like's it lean concensus. when my S&S Super B,won't hot start,no enrichener,throttle wide open,and it will start,usually after 1,kick. it has no accellerator pump,so this only lean's the mixture. [more air,lot's more]
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  #18  
Old 4 Weeks Ago
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I can't even get mine to start at all even cold, it just tries to fire after many kicks and sneezes out the S&S super E on my 74 ironhead. Just did the top end(pistons,rings,cylinders and she just wont fire up a half a day trying! All adjusted correctly as well! I do have a Ultima electronic Ignition so maybe she needs to be checked again?!
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  #19  
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Definitely make sure the timing is properly set. On the carb, are you using the enrichener to start? Are you twisting the grip a few times to put gas down the intake? My super e always liked two pump shots with the enrichener on for the first start. No enrichener needed once hot. Maybe try turning up the idle speed a little.
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  #20  
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A bike that won't start hot often has the idle mix too rich...

The Idle mix screw is an adjustment it doesn't get set to a number of turns, except for the first start. On a HOT motor, this means a HOT oil tank, lean the idle until it misfires then richen until it just runs smooth. THAT is where the Idle mix should be set at. Then reset the idle speed to no less than 900rpm, and repeat the idle mix adjustment. (I use 1050rpm hot)
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