Have a 96 Blazer Lt V6 it will not start unless I prime it first then it seems to run great, but sometimes I need to reprimer it again after I drive it for a few miles and park it and when I put gas in seems to boil the engine is hot but the temp gauge only reads 130/140 I have the thermostat out of it

Everythings seem to look good. I did however notice that on my fuel pump that one of plastic tips was broken off and they just drillid a hole into the take and stuck the hose in there. What are all three lines for I know one is the fuel line one is the return what is the third one for. Everythings seem to look good. I did however notice that on my fuel pump that one of plastic tips was broken off and they just drillid a hole into the take and stuck the hose in there. What are all three lines for I know one is the fuel line one is the return what is the third one for.

Ok, there are different problems involved here. The fuel issue: You either have a leak on the vacum or you fuel pump is faulty. I assume it is electronic. Trace the Fuel lines back to the Fuel pump, I believe on that year model it is located next to the fuel tank in the rear, and make sure they are not cracked or leaking. replace any faulty lines. The temp problem: There could be a couple of issuescausing you problems here. First and formost you really need to put the thermastat back in. You can get away with no thermastat if you are in Texas or along teh gulf coast for a short period but not forever. That is a temporary fix at best. Are you losing water or do you see water condensation from the exhaust? If you answer yest to either of these do a compression test of your engine. If any cylinder has an abnormally high reading, 30 to 40 psi more than other cylinders, then you have a serious engine problem and water is getting into you cylinders. You need to replace the headgasket at least and may have craked you Head or block. I wouldn't wait too long on this issue. Ok, there are different problems involved here. The fuel issue: You either have a leak on the vacum or you fuel pump is faulty. I assume it is electronic. Trace the Fuel lines back to the Fuel pump, I believe on that year model it is located next to the fuel tank in the rear, and make sure they are not cracked or leaking. replace any faulty lines. The temp problem: There could be a couple of issuescausing you problems here. First and formost you really need to put the thermastat back in. You can get away with no thermastat if you are in Texas or along teh gulf coast for a short period but not forever. That is a temporary fix at best. Are you losing water or do you see water condensation from the exhaust? If you answer yest to either of these do a compression test of your engine. If any cylinder has an abnormally high reading, 30 to 40 psi more than other cylinders, then you have a serious engine problem and water is getting into you cylinders. You need to replace the headgasket at least and may have craked you Head or block. I wouldn't wait too long on this issue.