fuel pump priming question...
Thread Starter
|
Stellar HDF Member
Joined: Sep 2017
Posts: 2,143
Likes: 576
From: memphis
fuel pump priming question...
if I turn the ignition switch on and off multiple times with the run switch on should i hear the fuel pump prime each time. right now when I do this in succession it on ly primes on the first turn on. I'm turning it on for 10 seconds then off for 10 seconds 5 times.
thanks
thanks
Road Master
Joined: Jan 2020
Posts: 856
Likes: 373
From: Duke City, NM
Is there an issue or is the bike running ok?
Don’t turn it on and off for ten seconds 5 times in a row, problem solved.
But, it is different depending on year and maybe some other things. I went out and tested on both of my bikes. 2011 Road King Classic and also a 2021 Road Glide Standard. The Road King has been flashed with a PV5 when I did stage 2, not sure if that matters.
2021 primes every time the switch is turned regardless of time.
2011 primes again after about 5 seconds, remember the ECM has been flashed.
The older Delphi ECMs originally had a 10 second timeout on the prime, I think it is stated in a service manual but mine for the 2011 is still packed in a box in the basement. If it is running fine, no worries.
Don’t turn it on and off for ten seconds 5 times in a row, problem solved.
But, it is different depending on year and maybe some other things. I went out and tested on both of my bikes. 2011 Road King Classic and also a 2021 Road Glide Standard. The Road King has been flashed with a PV5 when I did stage 2, not sure if that matters.
2021 primes every time the switch is turned regardless of time.
2011 primes again after about 5 seconds, remember the ECM has been flashed.
The older Delphi ECMs originally had a 10 second timeout on the prime, I think it is stated in a service manual but mine for the 2011 is still packed in a box in the basement. If it is running fine, no worries.
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,900
Likes: 8,007
From: poway
You'll probably need to wait up to 20/30 seconds for the micro in the ECM to go to sleep. On some bikes, you can tell as the speedo and tach needles twitch..
Trending Topics
Thread Starter
|
Stellar HDF Member
Joined: Sep 2017
Posts: 2,143
Likes: 576
From: memphis
yes they are. tps correlation issue.
yes..it primes when I give it ~30 seconds.
You'll probably need to wait up to 20/30 seconds for the micro in the ECM to go to sleep. On some bikes, you can tell as the speedo and tach needles twitch..
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
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
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Thread
Thread Starter
Forum
Replies
Last Post