rjg1985 Posted June 28, 2011 Share #1 Posted June 28, 2011 I have not started to look for the problem yet, but here are the symptoms. First off I have an 1985 royale with an 87 engine. Did the swap 4th of July weekend 2010 and the bike has run great. Now it starts and runs fine for cruising but when I get the rpms over 4500 it has no power. I used the carbs from the 1200 engine but with larger jets (same as the 1300 carbs would have). It has been running like this since I took it out this spring last year it ran fine. It seems like the timing is not advancing. Any suggestions would be great. Link to comment Share on other sites More sharing options...
Yammer Dan Posted June 29, 2011 Share #2 Posted June 29, 2011 Problems after sitting? Have you Sea-Foamed it?? Link to comment Share on other sites More sharing options...
rjg1985 Posted June 29, 2011 Author Share #3 Posted June 29, 2011 I just did tonight and have not riden yet. Filled the tank at noon today and used it to go see a customer. Cruised down the interstate at 75 mph no problem. Twist it wide open and it does not want to take off like it should. Hopfully the seafoam will help. I would like to find a set of carbs for a 1300 engine. I think my mileage would improve. I only get about 33 mpg the the 1200 carbs. Link to comment Share on other sites More sharing options...
MasterGuns Posted June 29, 2011 Share #4 Posted June 29, 2011 Have you checked the vacuum boost sensor? Sounds like it could not be holding a vacuum and therefore not advancing the timing AT ALL. Link to comment Share on other sites More sharing options...
rjg1985 Posted June 29, 2011 Author Share #5 Posted June 29, 2011 If the problem persists I will be checking the carb sync and all vacuum lines plus clean the electrical connections this weekend. Link to comment Share on other sites More sharing options...
GaryZ Posted June 29, 2011 Share #6 Posted June 29, 2011 My guess: Bad Boost Sensor or maybe bad carb diaphragms Link to comment Share on other sites More sharing options...
rjg1985 Posted June 29, 2011 Author Share #7 Posted June 29, 2011 Diaphrams are new Link to comment Share on other sites More sharing options...
GaryZ Posted June 29, 2011 Share #8 Posted June 29, 2011 Diaphrams are new Can you see the sliders moving equally? Link to comment Share on other sites More sharing options...
Marcarl Posted June 29, 2011 Share #9 Posted June 29, 2011 Just keep it under 4500, these engines work great below 45 although they are amazing around 6000. And oh, don't be cheap with the seafoam,,, pour the whole can in and try to use the tank full over a couple of days so that it has time to clean. Link to comment Share on other sites More sharing options...
rjg1985 Posted June 29, 2011 Author Share #10 Posted June 29, 2011 I added seafoam last night and noticed an improvement on the ride to work this morning. I usually put seafoam in the fuel before storage but never got to it last fall. Link to comment Share on other sites More sharing options...
DavidGrant Posted June 29, 2011 Share #11 Posted June 29, 2011 I SeaFoam-ed mine and was having the same symptoms you describe. I changed out the plugs and problem gone! Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now