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My '81 XLS starts well and seems to run ok, but after running for a while the rear cylinder gets extremely hot while the front one stays cool enough to actually put my hand on it. I can hear a psst sound coming from somewhere around the intake on the front jug every once in a while but can't actually tell where it comes from. Anyone have any ideas on what I can look for? Thanks
Sounds like you have an intake leak.
Spray some carb cleaner in small bursts in different areas around the intake to head while the engine is idling and listen for changes in the idle.
A leak will draw the stuff in and change the idle rpms.
Better take care of this soon or you may damage your engine from a lean condition.
Great info! The clamp for the front head was on at a weird angle. I moved it and tightened it down and the thing runs like it should. Thanks a million for the help.
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