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fuel injection problems
Posted: Sun Sep 27, 2015 7:45 pm
Author: johnA
hello gents does anyone on here know of anyone who can sort motorcycle fuel injection. been out on my gpz1100 today started running rough like stuttering at certain throttle positions so i'm guessing it's the injection system.
many thanks in advance john
Posted: Sun Sep 27, 2015 8:17 pm
Author: z1bman
what model is it ?
Posted: Mon Sep 28, 2015 7:47 am
Author: johnA
Sorry forgot to say it's a 1983 gpz1100 A1 with standard exhaust system.
Posted: Mon Sep 28, 2015 8:11 am
Author: Pigford
Check ALL electrical connections first.... maybe loose or corroded
Posted: Mon Sep 28, 2015 5:19 pm
Author: z1bman
is the ecu flashing a code ?
Posted: Mon Sep 28, 2015 8:37 pm
Author: johnA
no mate no flashing was thinking it could be the injectors because when i got the bike the tank was orange with rust on the inside and the filter was the same.it only judders on part throttle when its fully open it runs fine. thanks for the replies john
Posted: Mon Sep 28, 2015 9:08 pm
Author: z1bman
did you clean out the pressure release valve in the tank. have you tried new plugs?
Posted: Mon Sep 28, 2015 10:34 pm
Author: johnA
yes mate all cleaned new filters and new plugs.
Posted: Mon Sep 28, 2015 10:45 pm
Author: z1bman
have you still got the side stand switch fitted ?
Posted: Tue Sep 29, 2015 6:47 am
Author: johnA
Yes mate the side stand switch is still on the plunger is working ok. Does it want checking for continuity.
Posted: Tue Sep 29, 2015 7:27 am
Author: z1bman
disconnect / bypass the switch. very common thing to cause running problems
Posted: Tue Sep 29, 2015 8:12 pm
Author: johnA
thanks for that will try it.
Posted: Fri Oct 02, 2015 9:31 pm
Author: RAYZ1
take each injector out and clean them with carb spray, if you can connect them up to the harness and blow through them as you crank it over.
It worked a treat for 2 bikes that I had with gummed up injectors. They were MVs with a 5 hole pentagon spray pattern ,
after some carb cleaner and blowing through I eventually got a nice even spray pattern on some tissue paper. After that the bike ran fine. So fuel injection systems can gum up just like carbs and run like sh*t.
Posted: Sat Oct 03, 2015 8:00 pm
Author: johnA
thank you for the reply mate.