Question about Chevrolet Tahoe
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Posted on Jan 02, 2017
SOURCE: Ford F100 Fuel System
how hard was it to pump it by hand?Iwould be suprised if a mechanical fuel pump could be easily pumped by hand as the spring pressure required to hold the arm against the eccentric is considerable If its a cleveland or windsor you cannot pump by hand.I own a 1980 running a cleveland and found that if you put an electric pump as close to the fuel tank as possible and have a good original mechanical pump fuel delivery is no longer a problem.I had to do this as soon as i went to a 600 holley as the original pump was not able to supply sufficient flow.the electric pump doesnt have to be an expensive hi volume type,it only has to help to get fuel to the mechanicl pump
Posted on Oct 09, 2008
dr_greg is incorect. The bleeder valve is on the thermastat housing near the intake manifold. Follow the hose from the top of the radiator to the the engine. Look for something that looks like a 12mm head nut with a metal nipple comming through it. If you change your coolant but do not open this valve untill coolant flows from it you may cause an air pocket to remain in your engine, possibly causing your car to over heat.
Posted on Apr 16, 2009
Hi, i'm going to ask if you've checked the fan clutch? with the engine running, do you feel a strong wind flow coming from the fan when you stand near it? If the fan clutch is not engaging, and it will still spin and look as though it is working, but it has no force. This will cause the engine to overheat. another thing to check is whether the electric fan comes on when you put the air con on.
1. If you don't feel a strong blow of air coming from the engine bay when it is running and the hood open, then very carefully and slowly try and see if the fan clutch is working by using a broom handle to hold it still when the engine is running. If it is working well, it will kick the broom handle out of the way. If not, the fan will just stop spinning with the broom handle holding it.
2. turn air con off and run engine. check fan clutch. If fan clutch ok, then turn air con on and see if the electric fan is running as well. If electric fan is not running as soon as you put the air con on, then the supply to the fan is faulty. This could be a fuse, a bad connection, or even switch relay.
The engine fan cannot cool the engine sufficiently on its own with the air con on.
an easy way to get air out of the engine coolant system is to take the cap off, and turn the engine on. with the engine cool enough, you can carefully squeeze the top coolant hose to push out the air and this should make the cooland level drop. top up the coolant through the radiator cap - not the reserve/expansion tank. with the rad topped up to the brim, put the cap back on.
do these tests first. They're easy and will let you identify if the system is working. If these are working, and it's still overheating, then it could be the rad cap becoming faulty, or even if its a replacement cap, it's rated wrong for the lbs, and doesn't let the radiator breath and let the expanded hot coolant flow into the expansion tank. This will make the engine overheat and build up enough pressure so that the coolant gets kicked out of the engine via a hose, splitting the radiator, or eventually the head gasket. This type of fault usually occurs when you sit still at lights, or parked up with the engine running, and you then notice collant squirting out. Also, especially after you've ran the engine and stopped the engine running. The build up of pressure has no where to go so the hot coolant from the engine pushes the coolant out of the nearest hole it can find.
Still, something is making it run hot, it could be the clutch fan or coolant pump.
Posted on Jul 25, 2009
According to my data base it has one, but it doesn't give the location. The ones I've seen are located on the thermostat housing or on the engine close to it and they look like a brake bleeder valve.
Posted on Aug 03, 2009
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