1997 Roadking Issue
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Stage IV
Joined: Nov 2017
Posts: 4
Likes: 0
From: Tucson
1997 Roadking Issue
32k Miles on my Flhri. Bike runs great until 2/3 miles and it heats up. Missing and spitting through the throttle body lots of backfiring. Will not do this at idle when hot. Only under load. Revs clean at idle. Replaced injectors,fuel lines, fuel pump, lines and filter. Replaced fuel pressure regulator, cylinder head temp sensor, plugs. It has an older Vance and Hines fueler on it but I wired around it to remove it from the scenario. Same result.Did the test on ignition pickup cooling it down and heating it up with no symptoms. CPS, TPS, ATS? Only code it held was front/Rear injectors. What day the experts ?
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Stage IV
Joined: Nov 2017
Posts: 4
Likes: 0
From: Tucson
timing is on. definitely heat related. Starts runs idles and rides perfectly for 2/3 miles. When its hot and under load it craps the bed.
Last edited by Tsndave; Nov 12, 2017 at 12:48 PM.
Road Captain
Joined: Mar 2016
Posts: 600
Likes: 231
From: Dewey, Arizona 86327
intake manifold seals/gaskets? Plug wires? I'd lean towards the thing running lean from the symptoms, check the wires running to teh injectors real carefuly, those have been a problem for some guys. That code for injectors makes those REAL suspicious.
I'd change the plug wires, too, its an easy fix and MIGHT be a problem. Modern plug wires aren't really wire, they're a conductive fabric, and deteriorate with time.
I'd change the plug wires, too, its an easy fix and MIGHT be a problem. Modern plug wires aren't really wire, they're a conductive fabric, and deteriorate with time.
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From: Puyallup, wa
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Novice
Joined: Sep 2017
Posts: 23
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From: Sussex
I'm not clear if you still have the injector codes. If you have that's where you need to be looking.
If not it could well be as simple as coils or HT wires. Engines will spark well enough to idle but the spark falls apart when under load.
I'd stick some new HT leads on as a matter of course and see if you can get your hands on some coils to substitute.
Good luck. It will be obvious once you find the answer. It always is.!
Andy
If not it could well be as simple as coils or HT wires. Engines will spark well enough to idle but the spark falls apart when under load.
I'd stick some new HT leads on as a matter of course and see if you can get your hands on some coils to substitute.
Good luck. It will be obvious once you find the answer. It always is.!
Andy