Motoduc84 Posted May 16, 2008 Share Posted May 16, 2008 Greetings: Just learned of this site...and I will be here a lot! Longtime Yamaha rider! Anyhow, last year, my older brother passed away...and his family is asking me to sell his 1976 DT 400. It is very clean and was ridden only 3,800 miles over the years. Which is probably the problem here. It starts easily with the choke on and will run fine like that, but when you take the choke off...it dies. There was a lot of varnish in the carb, but I have sprayed and used air pressure and I think the jets and various holes are clean. But the problem persists. I have considered a new carburetor and it seems like there are plenty of Mikuni dealers around. But I am concerned about the right fit. Will a new Mikuni have the right plug for the auto injector? Other issues, perhaps? There does not appear to be any leaks around the carb manifold and it runs too strongly to have a bad crankcase seal. Any help would be greatly appreciated. Thanks. Kent Link to comment Share on other sites More sharing options...
Moderator Airhead Posted May 16, 2008 Moderator Share Posted May 16, 2008 Greetings: I think the jets and various holes are clean. But the problem persists. Thanks. Kent Hi Kent, to the forum. You really should check them jets are clear, youre going to have to remove them to check them properly, an old bike like that and with the symptoms you describe, they're almost certain to be blocked Link to comment Share on other sites More sharing options...
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