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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 5.8cobra on September 29, 2008, 06:04:22 pm
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Hello. I hope that you can help. I have an '87 silverado with a TBI 305 and dual tanks. I had a fuel leak in a line and had to replace them. While I was at it I changed the fuel filter. Now it won't start. I also can not tell if the pumps are working or not. Not sure where to start first in checking. Thanks in advance.
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you didnt put the filter in backwards ?
Did you accidental knock a wire off ?
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see if it is gas related. I'd take some gas and pout a little in the throttle body. She if she fires.
if not, check for spark
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did you kink one of your fuel lines?
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When you turn on your ignition, (without starting the engine)well that was a stupid thing for me to say wasn't it? ANYWAY- with the key on you should hear the fuel pump humming under the truck. The left tank pump is very noticeable and when you switch to the right tank it is a bit quieter but still a noticeable hum. Under the steering column there is an electrical connector for your ALDL . By jumpering out the 2 pins on the farthest right with a paper clip, you can cause the computer to display codes on your instrument panel speedometer. (Key on) The "check engine" light will flash. It will flash a series of codes for you. You have to count the flashes to interpret the codes that the computer is sending. It might flash six times and the two more- and then six more flashes, then two more again. It is flashing a code 62. Every code is flashed 3 times. Then the computer begins it's flashing sequence again. Try it and tell us what codes the truck is sending.
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Is there fuel in the tank?