Popping out of pipes and carb
Road Warrior
Joined: Jan 2007
Posts: 1,276
Likes: 8
From: Minneapolis Area, MN
RE: Popping out of pipes and carb
ORIGINAL: Reckless Kelly
makes sense to me.........................i'll change them and see if it helps.
you don't happen to know how to get a torque wrench on the rear cylinder plug do you? Igintion is right in the way on my bike (91' lowrider)
thanks -
makes sense to me.........................i'll change them and see if it helps.
you don't happen to know how to get a torque wrench on the rear cylinder plug do you? Igintion is right in the way on my bike (91' lowrider)
thanks -
You could do the same...torque the front just under spec and grab the crescent wrench and see what it takes to turn the plug a tiche more...then match the rear to the front.
Banned
Joined: Feb 2006
Posts: 20,836
Likes: 7
RE: Popping out of pipes and carb
ORIGINAL: IronhorseMarty
Last fall (06) I garaged the bike. It had been coughing a lot then but had times of good riding. This spring (07) I started it up (with some coaxing) and it idled fine but when I tried to ride it, it popped a lot out of the pipes and some out of the carb and I couldnt get it past 20 mph. I changed plugs, ignition module, no significant intake leak, jets are 165 and 50, mikuni hsr 42 carb, tach does bump a bit at idle, at idle throttle works fine and accelerates nicely but as soon as I put a load on the bike....bad news. Now I know why most harley owners are bald.....I'm pulling my hair out on this one. HELP. (By the way...'92 electra glide classic, 1340)
Last fall (06) I garaged the bike. It had been coughing a lot then but had times of good riding. This spring (07) I started it up (with some coaxing) and it idled fine but when I tried to ride it, it popped a lot out of the pipes and some out of the carb and I couldnt get it past 20 mph. I changed plugs, ignition module, no significant intake leak, jets are 165 and 50, mikuni hsr 42 carb, tach does bump a bit at idle, at idle throttle works fine and accelerates nicely but as soon as I put a load on the bike....bad news. Now I know why most harley owners are bald.....I'm pulling my hair out on this one. HELP. (By the way...'92 electra glide classic, 1340)
Road Warrior
Joined: Jun 2006
Posts: 1,318
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From:
RE: Popping out of pipes and carb
ORIGINAL: fxstcguy98
Enricher on for 15 mins? Way to much, no wonder it's rides like crap, your plugs are fouled up. If it's above 50 degs I only pull the enricher 1/4 to 1/2 way and idles it for a min. or two, then push it all the way in after a couple of blocks. If it's over 65 degs, I don't use the enricher at all.
Enricher on for 15 mins? Way to much, no wonder it's rides like crap, your plugs are fouled up. If it's above 50 degs I only pull the enricher 1/4 to 1/2 way and idles it for a min. or two, then push it all the way in after a couple of blocks. If it's over 65 degs, I don't use the enricher at all.
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4th Gear
Joined: Apr 2006
Posts: 8
Likes: 0
From:
RE: Popping out of pipes and carb
Just an update.....I am starting to tear down the bike and find the popping problem. I'll check the battery for a good charge, swap out module and coil, new plugs and wires. I want to wait til I've checked all the easy stuff before I think of valve change outs. Upper wnd rebuilds, even when I do the work , are expensive. Harleys......hate 'em or love 'em !!!!!
Advanced
Joined: May 2007
Posts: 51
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From:
RE: Popping out of pipes and carb
I have S&S Super E on my 87fxstc, but if I leave my enrichner on full for more than 10 or 20 seconds, it will do exactly what your talking about. I have had to change plugs on the spot a couple times before after I forgot to turn the enrichner off.... OOOPS. It just toasts plugs on my bike if I leave it on for even a little while. They don't look bad at all,... but they're done.
Remember, try the easy cheap stuff first.
Keep us updated.
Remember, try the easy cheap stuff first.
Keep us updated.
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4th Gear
Joined: Apr 2006
Posts: 8
Likes: 0
From:
RE: Popping out of pipes and carb
I tore down the top end and the pistons look like I dragged them through the fields. Thick black carbon on tops and some on top edges. Bottom of the heads look just as bad. Exhaust valves are pitted and light brown and intake valves are black as night. Not sure but looks like a valve job in the future. Should pistons be taken out from the bottom of the cylinder or the top?
Is there a difference? I'm going to replace the pistons and rings and see if the heads are keepable. Since I'm there.....I'll check the cyl specs. Maybe hone them out for lgr pistons. Would I need to replace heads if I increase size of pistons??
I need a rich uncle.
Is there a difference? I'm going to replace the pistons and rings and see if the heads are keepable. Since I'm there.....I'll check the cyl specs. Maybe hone them out for lgr pistons. Would I need to replace heads if I increase size of pistons??
I need a rich uncle.
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4th Gear
Joined: Apr 2006
Posts: 8
Likes: 0
From:
RE: Popping out of pipes and carb
Well, decided to get new valve sets. Light hone on the cylinders. got new pistons, gasket set, rings of course, studs, push rods, and more.
I figured since I have it apart....
the saga continues.
I figured since I have it apart....
the saga continues.
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