Hard Start

Reply Subscribe

Thread Tools

Search this Thread

Sep 20, 2023 | 08:07 PM

#11

abolton89

Cruiser

Joined: Apr 2023

Posts: 133

Likes: 68

From: Durant, OK

I dealt with that on my 18 heritage 107. I felt it was vapor lock related
when I got my tune from Fuelmoto on my PV4 it went away completely. never had it happen since.

Sep 20, 2023 | 08:10 PM

#12

whylee

Road Warrior

Joined: Feb 2007

Posts: 1,625

Likes: 349

From: The Biggest Little City, Reno, NV

I dont think the clock would clear itself if the compression release was bad, still sounds like battery or a bad connection somewhere.

Sep 20, 2023 | 08:52 PM

#13

GalvTexGuy

Seasoned HDF Member

Joined: Apr 2015

Posts: 10,071

Likes: 5,321

Quote:

Originally Posted by Monteman1971

Ok, google search, the lurch seems to be normal.

The automatic compression release (ACR) seems to correspond with my problem. I'm looking into that further.

I'll let you know how I make out. Unless there are other things to check out.

Thanks again,
Steve

Yeah, but what I was getting at is starting in gear, especially if the bike is lurching, puts more stress on the battery. That’s why I asked for battery make and CCA.

Sep 21, 2023 | 07:09 AM

#14

Monteman1971

Thread Starter

Road Captain

Joined: Dec 2016

Posts: 611

Likes: 204

From: Long Island, NY

Quote:

Originally Posted by whylee

I dont think the clock would clear itself if the compression release was bad, still sounds like battery or a bad connection somewhere.

Agree, but possibly because attempting to start the bike is taking an excessive amount of power, the surge interrupts the clock?

Sep 21, 2023 | 07:11 AM

#15

Monteman1971

Thread Starter

Road Captain

Joined: Dec 2016

Posts: 611

Likes: 204

From: Long Island, NY

Quote:

Originally Posted by GalvTexGuy

Yeah, but what I was getting at is starting in gear, especially if the bike is lurching, puts more stress on the battery. That’s why I asked for battery make and CCA.

I'll need to pull the battery in any case but I got it at Harley and asked for the correct battery so I would assume it's the correct one... but who knows. When I pull it, I'll let you know.

Sep 21, 2023 | 07:14 AM

#16

Monteman1971

Thread Starter

Road Captain

Joined: Dec 2016

Posts: 611

Likes: 204

From: Long Island, NY

Quote:

Originally Posted by abolton89

I dealt with that on my 18 heritage 107. I felt it was vapor lock related
when I got my tune from Fuelmoto on my PV4 it went away completely. never had it happen since.

Vapor lock is typically on a hot engine, this happens hot or cold and it's intermittent.

Thanks everyone for all the ideas... it's giving me places to look.

Steve

Sep 21, 2023 | 07:53 AM

#17

abolton89

Cruiser

Joined: Apr 2023

Posts: 133

Likes: 68

From: Durant, OK

Quote:

Originally Posted by Monteman1971

Vapor lock is typically on a hot engine, this happens hot or cold and it's intermittent.

Thanks everyone for all the ideas... it's giving me places to look.

Steve

it happened hot or cold with me as well. Vapor lock was just an idea. But I really think it was factory tune related.
since the flash, I don’t even think about the hard starts anymore. I was actually shocked the flash had got rid of the issue.

Sep 21, 2023 | 09:13 AM

#18

Tozco

Road Captain

Joined: Nov 2017

Posts: 575

Likes: 263

From: Spokane, WA

Another part of the equation is the starter itself.

HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

6 Weirdest Harley-Davidsons Ever Sold to the Public

Verdad Gallardo

7 Times Harley-Davidson Chucked Tradition Out the Window

Verdad Gallardo

7 Surprising Harley-Davidson Products that Are Not Motorcycles

Verdad Gallardo

8 Best Harley-Davidson Motorcycles Ever

Pouria Savadkouei

10 Worst Harley-Davidson Motorcycles Ever

Pouria Savadkouei

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Verdad Gallardo

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Verdad Gallardo

Harley-Davidson Reveals Super Cool Cafe Racer Concept

Verdad Gallardo

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Verdad Gallardo

10 Motorcycles You Should Never Buy

Joe Kucinski

Sep 21, 2023 | 09:23 AM

#19

Rounders

Seasoned HDF Member

Joined: Mar 2021

Posts: 18,481

Likes: 3,723

From: backwoods

Quote:

Originally Posted by Monteman1971

I always start the bike in neutral but I just tried it in gear and the bike did lurch forward just a bit. What does that mean? The bike has 17k on it and the clutch has never been adjusted so I would think if anything it's loose and not tight.

Your thoughts?

What I think is you need to maintain your bike

17k and you have not adjusted clutch???? Adjust clutch and try again. May or may not help. I start in neutral.

Also what brand battery?

Curious, if you put charger on high does it start better?

The automatic compression release is interesting, my first bike with them. If you give bike quick start and then try again any better? I've done this to decompress bikes when hot.

Last edited by Rounders; Sep 21, 2023 at 09:24 AM.