Engine Blubbers at shut down

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May 6, 2019 | 07:33 PM

#21

Papa Jack

Thread Starter

Intermediate

Joined: Oct 2014

Posts: 48

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From: Bertram, Texas

Quote:

Originally Posted by bentparts

How high is your idle set? I had one do that run on dieseling thing a while back. My mechanic buddy suggested lowering the idle, and it worked, no more " blubbering."

Idle is a little high. Ill check/set that in the am.

May 7, 2019 | 10:17 AM

#22

grbrown

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Joined: Jun 2007

Posts: 45,429

Likes: 2,897

From: Bedford UK

Quote:

Originally Posted by splattttttt

GB
would revving the motor before turning it off help?

I don't believe it would! Poor thing needs to be put right or taken to someone who can sort it out properly. That could include cleaning the heads, ports and valves, changing spark plugs (they may be the wrong grade), plus checking timing as already mentioned.

Last edited by grbrown; May 7, 2019 at 10:20 AM.

May 7, 2019 | 02:28 PM

#23

splattttttt

Ultimate HDF Member

Joined: Jul 2014

Posts: 5,649

Likes: 430

From: MASS_hole

GB, I also read that a weak battery or bad connections starting there all the way towards the coil
is worth a look

May 7, 2019 | 03:44 PM

#24

grbrown

Club Member

Joined: Jun 2007

Posts: 45,429

Likes: 2,897

From: Bedford UK

Quote:

Originally Posted by splattttttt

GB, I also read that a weak battery or bad connections starting there all the way towards the coil
is worth a look

Anything that might mess with the spark, so yes, that's another thing to check!

May 7, 2019 | 09:34 PM

#25

avenger09123

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Joined: Aug 2016

Posts: 54

Likes: 4

From: Colorado Springs

Just turn the fuel tank to off and let the bike idle the carb out of gas. When you turn it back on the bowl fills up nearly immediately.

Can't blubber if it aint got no gas....

May 8, 2019 | 08:53 AM

#26

jonnycando

Tourer

Joined: Feb 2019

Posts: 409

Likes: 103

From: Roanoke, VA

I think lowering the idle is going to be the cure here......but never below about 1000 to 1100 rpm....that aint good for oil circulation.

May 8, 2019 | 09:23 AM

#27

ZachE

Cruiser

Joined: Jul 2015

Posts: 166

Likes: 13

From: Beaufort, NC

Mine doesn't run on if I run 87, and runs on if I use 93. Runs cooler on 87 than 93... and I get fewer carb farts.

May 8, 2019 | 09:33 AM

#28

jonnycando

Tourer

Joined: Feb 2019

Posts: 409

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From: Roanoke, VA

Mine runs well on 87....seems to digest 93 ok.... perhaps a little hot but not terrible.

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May 8, 2019 | 09:52 AM

#29

splattttttt

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Joined: Jul 2014

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From: MASS_hole

Never tried anything lower than 91
But mine’s a modern fi. Tho the MoCo insists on 91 or higher

May 9, 2019 | 02:57 PM

#30

Papa Jack

Thread Starter

Intermediate

Joined: Oct 2014

Posts: 48

Likes: 1

From: Bertram, Texas

lowered the Idle, retarded just a hair, already had changed plugs. Have not had a problem. We'll see how it goes. Thanks for all the suggestions.
Ride Proud, Safe and Free!

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