New to forum, carb question
Tourer
Joined: Feb 2016
Posts: 309
Likes: 39
From: Southlake Texas
From the way you described the "gunk" in the jets, it sounds like the gunk must be in the vacuum port too. Just hook up a clean tube to the port and try blowing into the carb by mouth. If you can't blow in, then it is blocked.
Seasoned HDF Member
Joined: Jan 2015
Posts: 16,021
Likes: 7,147
From: Sandy Eggo's North County
pretty much has to be the petcock ,if its new, you may have got a bad one , what brand is it. if it the original the diaphragm in it probably has gone bad. you could try the old one and see if the carb fills with it installed I understand it leaks and you couldnt start the bike but could at least eliminate e or confirm the new one is good or bad
I had this same issue on my 1995 Dyna also.
Unless you have a fuel line blockage or pinch, I bet this is your issue.
Thread Starter
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Novice
Joined: Jan 2017
Posts: 24
Likes: 0
From: Southern California
Vacuum signal not getting to petcock or petcocks faulty. With vacuum and fuel line off, you should be able to suck on vacuum line and "open" petcock...I used pingle petcock on each of my builds over the years. No vacuum worries then. Also, the Mikuni thing; waaay overrated and will give negligible return for the money. Indy's love to sell up to them 'cause they're a nice money maker, but I've used CV's on all my carb builds
and challenged any shop that dissed them to a simple dyno comparison, none accepted. Stock CV with proper stock jets and no fairy dust internal parts. Have also used 44CV and 51CV but they're pretty hard to find now. When you do get convinced to go Mikuni, make sure you grind away enough fin on the heads so it's not touching...the vibes cause havoc with the float level.
and challenged any shop that dissed them to a simple dyno comparison, none accepted. Stock CV with proper stock jets and no fairy dust internal parts. Have also used 44CV and 51CV but they're pretty hard to find now. When you do get convinced to go Mikuni, make sure you grind away enough fin on the heads so it's not touching...the vibes cause havoc with the float level.
Gorman, beano and CJ thank you for those ideas I will check on that this evening as well and will post the results
The diaphragms that were originally used, would fail with the use of MTBE/ethanol juiced gasoline. There was a recall on this back in the mid nineties. The new diaphragms are VITON and they stand up to the alcohol laden fuels of today.
I had this same issue on my 1995 Dyna also.
Unless you have a fuel line blockage or pinch, I bet this is your issue.
I had this same issue on my 1995 Dyna also.
Unless you have a fuel line blockage or pinch, I bet this is your issue.
thank you all for the warm welcome and all the suggestions they're all greatly appreciated and it's good to get some outside perspectives on the issue
Last edited by ChickinOnaChain; Jan 24, 2017 at 11:23 PM.
Extreme HDF Member
Joined: Jun 2014
Posts: 11,448
Likes: 2,299
From: NW Ohio
Most carbs are perfectly fine. AS LONG AS YOU KNOW HOW TO TUNE THEM. I can't tune a Carter, but I can tune a Holley or Rochester, so those perform better FOR ME. Same with CV vs Mik. I can tune a Mik but never opened up a CV. I'd rather have a Mik on MY machine, but I have no illusions that it's the best metering device available.
Thread Starter
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Novice
Joined: Jan 2017
Posts: 24
Likes: 0
From: Southern California
Got it up and running! Tested petcock and vacuum port on carb and both were fine, blockage was coming from fuel inlet on the carb in between there and the float needle. Took carb apart got blockage out and it fired right up. Thank you everyone for welcoming me to the forum and for all your input on this!
I hate to revive a thread but it falls along the same lines, got it up and running and all that but was out riding tonight and noticed a couple things. 1 - after riding for a little while, stopped somewhere and when I went to start it back up about 20 minutes later it would die out unless I kept on the throttle for a minute or 2 and then it would idle fine. But then once I started riding again I noticed an intermittent sputter that was happening between 2-3k rpms. It wouldn't fully cut out and die, just sputter and I could hear the flap on the intake shutting when it would sputter. 2001 fxdxt with only a little under 400 miles on it.
I hate to revive a thread but it falls along the same lines, got it up and running and all that but was out riding tonight and noticed a couple things. 1 - after riding for a little while, stopped somewhere and when I went to start it back up about 20 minutes later it would die out unless I kept on the throttle for a minute or 2 and then it would idle fine. But then once I started riding again I noticed an intermittent sputter that was happening between 2-3k rpms. It wouldn't fully cut out and die, just sputter and I could hear the flap on the intake shutting when it would sputter. 2001 fxdxt with only a little under 400 miles on it.
Last edited by ChickinOnaChain; Jan 24, 2017 at 11:23 PM.
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