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11-08-2002, 02:52 PM | #1 |
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Join Date: May 2000
Location: IL
Posts: 0
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305 poofing under load
ok the 81 305 engine has a problem and i think its valve train related, it idles and revs fine but when you put truck in gear and give it gas to get going it has big popping problem out the exhaust and also out the carb,
when it pops out the carb it makes huge cloud of blue smoke and almost but doesnt kill the engine, it will catch up again till it ka-pops out carb again, and exhaust popping is a single pop and is not irregular, it happens every cycle- a little less than a second apart. timing adjustment of any kind doesnt change this symptom at all and the wires and everything look fine, carb is older model and non ESC, and so is distributor, its older one with vacuum advance. any idea what could be wrong with this 305 other than needing to be yanked and scrapped ? probably camshaft lobe or valve guide problem i bet.,. |
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