Bike left me hanging

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Aug 31, 2014 | 11:52 AM

#21

Hackd

Elite HDF Member

Joined: Oct 2005

Posts: 3,872

Likes: 83

From: Canton, Michigan

Quote:

Originally Posted by Dr.Hess

..And, for the record, a Harley big twin Evo will run 60MPH fully loaded on the front cylinder only with zero compression on the rear.

Well, that's reassuring.

I guess.....

Aug 31, 2014 | 02:39 PM

#22

texashillcountry

Dirt don't hurt

Joined: Jan 2011

Posts: 21,065

Likes: 4,561

From: Haslet Texas

Quote:

Originally Posted by Dr.Hess

And, for the record, a Harley big twin Evo will run 60MPH fully loaded on the front cylinder only with zero compression on the rear.

This is a fun fact that I hope to never find out for myself!!!

Aug 31, 2014 | 06:28 PM

#23

machinehed

Road Master

Joined: Oct 2011

Posts: 957

Likes: 2

From: Carlsbad Springs Ontario

no go .

Quote:

Originally Posted by spanky02

I am sitting waiting for a trailer to come pick me up as I type this... My bike started missing, one cylinder firing one not intermittently. Didn't matter how much load was on it low rpms or high rpms. It got real bad so I pulled into a gas station.. When I went to start it back up it only fired on one cylinder.. Ignition module? The coil has been replaced because it did something similar before and the coil tested bad so it was replaced.. Bike has ran fine until now..

Ok. so ... new coil replaced because it did this before , we can eliminate the ign. modual as it would provide no spark at all unless a bad connector.
Go to spark plugs first , then check for voltage leakage at plug wires in a dark room to check for leaking spark.
Check all signal wire connections to coils for looseness etc.
Use a cheap spark plug testor to check for proper spark at the offending cylinder . Come back with results.

Sep 2, 2014 | 08:12 PM

#24

spanky02

Thread Starter

Cruiser

Joined: Jul 2012

Posts: 204

Likes: 3

From: linden, pa

I couldn't find anything so i took it to my independent.. We shall see what he finds.. Thanks for all the replies

Sep 2, 2014 | 09:19 PM

#25

Tee&Vee

Stellar HDF Member

Joined: Jul 2011

Posts: 2,583

Likes: 115

From: Boston, MA

Quote:

Originally Posted by spanky02

I couldn't find anything so i took it to my independent.. We shall see what he finds.. Thanks for all the replies

For a teachable moment please report back.
Thanks,
Tom

Sep 3, 2014 | 06:34 AM

#26

carlgrover

Seasoned HDF Member

Joined: Oct 2007

Posts: 8,852

Likes: 2,493

From: Decatur, Alabama

I can't speak for an EVO but everytime my ironhead would run on one cylinder it was always that durn rear exhaust pushrod adjustment.

carl

Sep 4, 2014 | 02:55 PM

#27

spanky02

Thread Starter

Cruiser

Joined: Jul 2012

Posts: 204

Likes: 3

From: linden, pa

is it possible a bad speedometer could cause these symptoms? my speedo went bad around the same time. my year bike sucks to try and find a speedo...lol. we are gonna give it a shot because everything else is testing out ok

Sep 4, 2014 | 03:13 PM

#28

Dr.Hess

Seasoned HDF Member

Joined: Aug 2007

Posts: 8,198

Likes: 3,087

From: NW AR

No, not the speedo. And, ahhh... if your indy is suggesting the speedo is causing the rear cylinder to miss, ah... it's time to find a new indy.

When the bike is missing, that's when you need to diagnose it. Did you ever check the compression? Did you ever check for spark? Did you ever replace the rear spark plug? Did you swap the plug wires at the coil?