DaveAP Posted November 13, 2008 Share Posted November 13, 2008 Hi, always ran great. Lately it runs like crap. No power, sounds like it is missing. Then will go back to running great. I checked the choke, opening just fine. Replaced wires, plugs, rotor, cap. Sometimes I smell raw gas. Oxygen sensor, clogged cat, coil going bad... ? I know, grasping at straws. '87 ea-81 four speed. Thanks, Dave in Prescott, Az. Quote Link to comment Share on other sites More sharing options...
ettev Posted November 14, 2008 Share Posted November 14, 2008 Change the fuel filters. Should be 2 of them. One under the hood and one near the fuel pump under the back of the truck. Quote Link to comment Share on other sites More sharing options...
Caramanos2000 Posted November 14, 2008 Share Posted November 14, 2008 Remove the cat, sea foam the engine and change the fuel filters. My gl had that same issue. Quote Link to comment Share on other sites More sharing options...
cobcob Posted November 14, 2008 Share Posted November 14, 2008 wire the choke open and try running it like that... Mine looked to be opening OK but turned out it actually wasnt... Quote Link to comment Share on other sites More sharing options...
bobjr94 Posted November 14, 2008 Share Posted November 14, 2008 My 85 did that when I got it. Run fine, then start dying out loose all power, then go back normal again. People thought I was breaking down if someone was riding with me. In my case it was the mechanical mixture control, all the vacuum lines, valves and thermoswitches. Some of them had went bad it can be hard to test each part by its self. Take the 2 larger hoses off the top of the carb(not the fuel) , put a cap of some kind on the fittings on the carb and see is it runs better. If you leave it like it will be running to rich though and your gas mileage will go way down. I put in smaller jets from a damaged older carb back in mine to fix that problem. Quote Link to comment Share on other sites More sharing options...
DaveAP Posted November 15, 2008 Author Share Posted November 15, 2008 back to running normal today. geeze Quote Link to comment Share on other sites More sharing options...
ihscout54 Posted November 16, 2008 Share Posted November 16, 2008 things to check for that might cause "spoadic" condition 1: carb to make sure the secondary is closing as it should. 2: thermo vacuume switches (or the vaccume lines to them and connections) 3: distributor, all wires, and connections 4: vacuume advance on distributor Quote Link to comment Share on other sites More sharing options...
DaveAP Posted November 20, 2008 Author Share Posted November 20, 2008 thanks for the replys, these are a *************** to figure out. especially now that it is running right. dp Quote Link to comment Share on other sites More sharing options...
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