Dies when throttle applied 1988 Suzuki DS80

Randy Hough

• 2559 Answers

SOURCE: dies at idle

1. Carb jets may still be dirty or improperly sized.
2. The Cam and/or Cam journals are worn down and allowing some play in the timing.(Very common on the XR's)

Posted on Jan 31, 2009

SOURCE: engine dies when i give it gas, only when cold

ALWAYS have a fire extinguisher at hand when working on carburetors.
Drain the carburetors. There should be a screw on the lower side of each carb float bowl. Remove the screw then replace it after the fuel drains. Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it, clean it and re-mount it, (not all bikes have a water trap bowl). Turn the gas back on and wait a minute for the carbs to fill with gas. If the bike doesn't start and run properly then shut off the gas and remove the carburetors from the engine.

FOR EACH carb > Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward. Before putting the slides back in the throat of the carbs, move the clip on the jet needle one notch lower. Put the rest of the carb back together and install the carb. Sync the carbs such that the slides on the carbs move at the same exact instant when the throttle is slowly turned from idle speed. Clean or replace the air filter and install an in-line fuel filter. Let the float bowl fill then start the engine. This process should get you back on the road.

Please rate this solution. Thanks!

Posted on May 05, 2009

SOURCE: FXR suzuki 150 will idle but wont rev

Clean the fuel tank, fuel hose and fuel valve.

Posted on May 25, 2009

Nate Stansfield

• 11896 Answers

SOURCE: I have a 2001 Buell Blast that starts fine and

Either fuel filter is clogged or air filter is clogged or carb/fuel injectors need to be thuroughly cleaned

Posted on Oct 12, 2009

Testimonial: "It ended up being the Carb needed a good cleaning. Thanks!! J"

Wayne Thomas

• 301 Answers

SOURCE: Keihin CVK-D36 carbs on a 20 yr old ZZR 600

It sounds like your bike has been sitting in storage for an extended period of time (a year or more) - and the carburetors are plugged up. If this is the case, they will need to be completely disassembled and cleaned out.
If it hasn't been sitting (and the carbs aren't plugged up) then check that all of the normal tune-up items have been performed, especially valve adjustment, oil and filters, spark plugs, etc. If this fails to produce positive results, perform a compression check on the engine. Each cylinder must be able to produce at least 140 psi of compression in order to run and idle properly.

Posted on Nov 07, 2009