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About David Scott
Expertise
Questions regarding the advisability of different kinds of modifications to Samurai/Sidekick/Tracker or various kinds of off-road usage. I will not attempt to do more than provide links for questions about other Suzukis such as Vitara, Grand Vitara, etc. I may or may not give generalized advice for newer models, but have no experience regarding newer models, and will not attempt to give more than the most generalized answers for questions regarding vehicles later than '93 manufacture. I will however, if possible, provide a link that will help you contact a professional in your region.
Experience
I've been a professional mechanic for over thirty five years, live in the center of the Rocky Mountains, and have been active in exploring the old mining/4wd roads for decades. I've specific experience with Samurai modification, because that's my personal vehicle.
Education/Credentials
Thirty five years of advanced, intensive classes for experienced professionals only. Manufacturer seminars and training classes averaging four to six weeks per year. I'm now a professional heavy duty fleet mechanic, and no longer deal with issues such as MIL (check engine) lights
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You are here: Experts > Autos > Trucks > Suzuki > Headlights, power loss.
Expert: David Scott
Date: 8/11/2008
Subject: Headlights, power loss.
Question
Hello!
I have a 1987 Suzuki Samurai 1.3. When i have the engine running it usually sits at between 800 and 1200 rpm, but when I put the headlights on it rises to about 3000rpm! So much that I can actually pull away in first gear using my headlights! Any idea what could be causing this? I also have the problem of my SJ losing power on journeys but after reading some of your answers I think this could be a vaccum leak in the fuel pipes? Maybe?
Many thanks. John.
Answer
The carburetor has an "idle up" function operated by vacuum. I suspect that one of the mechanical linkages associated with this function has worn and is causing this. Get someone to turn the headlamps on and off while you disconnect vacuum hoses at the carb one at a time. It won't cause any harm to leave it disconnected. As I remember, it's low on the front of the carb. I never was able to get the fuel and emissions portion of the factory manual, so do not have that available.
scotty
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