Back cylinder not working
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Cruiser
Joined: May 2012
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From: Nevada
Back cylinder not working
I had a ride planned today and went to where I normally fuel up. I noticed the pump was barely pumping so I knew I was getting the bottom of the barrel fuel but continued to fill up. I got about 1 mile down the road and it began running terrible. After getting back home, I drained all the fuel out of tanks and carb and put some fresh gas back in. I also installed new plugs. The rear cylinder is not getting hot but air is coming out of the exhaust while running. The rear cylinder is getting fire, the plug is slightly wet but I assumed immediately it isnt getting enough fuel but I cant see how that could be since its carbed. I'm guessing stuck exhaust valve but could this be from bad gas? Is there a way maybe the rear cylinder isnt getting fuel?
Whats got me scratching my head is I brought the bike to a local small shop, the owner wasnt there that day and I brought a tire so I was probably pissing them off from the get go. The mechanic shut the door so he "could listen to the radio" and it took well over an hour to change that tire. I'm hoping he didnt screw with something. He had another evo in the shop.
Bike is a 1996 Heritage
Whats got me scratching my head is I brought the bike to a local small shop, the owner wasnt there that day and I brought a tire so I was probably pissing them off from the get go. The mechanic shut the door so he "could listen to the radio" and it took well over an hour to change that tire. I'm hoping he didnt screw with something. He had another evo in the shop.
Bike is a 1996 Heritage
Last edited by magazine; Feb 14, 2013 at 01:03 PM.
Dirt don't hurt
Joined: Jan 2011
Posts: 21,062
Likes: 4,547
From: Haslet Texas
I would pull both push-rods on that cylinder, open the rocker box to inspect the rocker arms and check out your lifters while you are in there.
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Joined: Aug 2007
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From: NW AR
Yeah, I think inspect the rockers. Did something bind up? Did your drop a valve? If you're really, really lucky, there was some type of metalurgical failure in the pushrod and you can just replace that with an adjustable one and be good to go. You might try that, with no spark plug in and spin the motor by hand (bike in the air, in fifth gear, turn slowly and watch.)
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Cruiser
Joined: May 2012
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From: Nevada
The pushrod that was damaged was on the rear cylinder for the intake valve. Probably why it wasnt getting fuel in that cylinder. From the rocker arm, the pushrod has dropped, so there is at least an inch between the rocker arm and top of pushrod. At first I thought the pushrod was broke but I think its just got beat up. I had a different shop come pick it up. This one has an excellent reputation. I dont have a decent shop to work on it myself so hope I dont get torn a new one...
Last edited by magazine; Feb 14, 2013 at 04:07 PM.
Dirt don't hurt
Joined: Jan 2011
Posts: 21,062
Likes: 4,547
From: Haslet Texas
The pushrod that was damaged was on the rear cylinder for the intake valve. Probably why it wasnt getting fuel in that cylinder. From the rocker arm, the pushrod has dropped, so there is at least an inch between the rocker arm and top of pushrod. At first I thought the pushrod was broke but I think its just got beat up. I had a different shop come pick it up. This one has an excellent reputation. I dont have a decent shop to work on it myself so hope I dont get torn a new one...
Just out of curiosity why did you ask us if you were gonna send your bike to a shop anyway?
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Cruiser
Joined: May 2012
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From: Nevada
I didnt want to send it to the shop. I wanted you to tell me that the back cylinder isnt getting fuel and its common just do this and that and it will be fine. lol. I really did think it wasnt getting fuel. Turns out it wasnt because the intake valve was closed shut. I wish I had the knowledge to fix it myself. I'm sure you all could walk me through it if I had it in me, I just got a panic when I saw the dropped pushrod. I did try and remove the pushrod cover but couldnt seem to get it off.
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From: Near Frankenmuth, MI
Might be a collapsed lifter and a fairly easy fix.
Was your comment about the push rod being beaten up mean that the top of the push rod had been striking improperly and banged up the tip of the push rod? Or did the push rod appear critically damaged?
Were you able to locate a broken section of push rod?
Was your comment about the push rod being beaten up mean that the top of the push rod had been striking improperly and banged up the tip of the push rod? Or did the push rod appear critically damaged?
Were you able to locate a broken section of push rod?
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Dirt don't hurt
Joined: Jan 2011
Posts: 21,062
Likes: 4,547
From: Haslet Texas
I didnt want to send it to the shop. I wanted you to tell me that the back cylinder isnt getting fuel and its common just do this and that and it will be fine. lol. I really did think it wasnt getting fuel. Turns out it wasnt because the intake valve was closed shut. I wish I had the knowledge to fix it myself. I'm sure you all could walk me through it if I had it in me, I just got a panic when I saw the dropped pushrod. I did try and remove the pushrod cover but couldnt seem to get it off.
Thread Starter
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Cruiser
Joined: May 2012
Posts: 194
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From: Nevada
Might be a collapsed lifter and a fairly easy fix.
Was your comment about the push rod being beaten up mean that the top of the push rod had been striking improperly and banged up the tip of the push rod? Or did the push rod appear critically damaged?
Were you able to locate a broken section of push rod?
Was your comment about the push rod being beaten up mean that the top of the push rod had been striking improperly and banged up the tip of the push rod? Or did the push rod appear critically damaged?
Were you able to locate a broken section of push rod?
Yes, the top of the pushrod was banged up on the tip. A large metal flake from it was in the corner. You could lift up and drop the pushrod, it was loose. Any idea what something like this could set me back? Ty all for the help here, even though I ended up letting the shop have it.