I have a 97 gmc sierra w/ 5.7 l engine that won't start
It will crank & crank but no start. If I squirt a bit of starting fluid into the air cleaner, it starts & stays running. After a coupla minutes warm up, if I turn engine off, then restart, it starts right up. But it Won't start 'cold' in the morning unless I spray a bit of starting fluid. 2 yrs ago, I had fuel lines leaking & replaced them.
Any ideas on this new problem??
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#1 reason for a no start on the chevy trucks is a bad fuel pump, try spraying some carb clean into the throttle body, just a few squirts, and see if the truck tries to start! Q: is the vehicle cranking over? If its not even cranking over then you may have a battery issue..
Spray starting fluid into the air intake of the engine, if it starts and you have fuel pressure you have no injection or injector pulse as we call it. Check ECM fuse one and two for continuity if it starts with fluid..
The first thing I would check is fuel pressure. This type of fuel injection requires a minimum fuel pressure in order to operate. If fuel pressure is as little as one psi below minimum the vehicle will not start.
You can try squirting a couple of shots of carb spray into the air snorkel while somebody cranks the engine over. If the engine starts and then dies you now you fpdeffinetely have a fuel issue.
If the engine still won't start check for spark.
Let me know what you find.
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you will need two people to test to see if you have a bad fuel pump. you will need a can of aerosol throttle body cleaner. open up the air filter casing and and make sure u do not squit any fluid on the MAF air flow sensor the bottle of cleaner sometimes has a red straw for further reach use this straw. the other person has to crank the engine and once the enine begins to turn over start squirting the fluid into the engine via the air filter tube. have plenty of trigger control becuse too much fluid might cause a back fire (so you might want to wear a clean glove) and too little fluid wont start the engine. if you get the enine to run for a brief second while squirting the chemical chances are that the fule pump is bad or the fuel filter is clogged. hope this helps
Are you getting fuel? if the pump is out then you won't get fuel and it won't start. Check for fuel at the throttle body under the air cleaner also pull a plug and connect it to the wire and ground it to the engine block to see if your getting spark. try this and let me know. I suspect the fuel pump since these last around 8-10 years before they just quit.
u can do the check the other way around/ disconnect the fuel line that supply the injectors/ put the pipe in a small plastic container to see if fuel is being supplied by the pump and avoid fuel spill in ur engine/ crank the engine for at least 5 seconds see if the fuel squirts with pressure/ if it does then ur fuel pump is ok / blockage is somewhere down the fuel line/ u can check fuel lines by blowing it with air but u gonna need the help of an air compressor.....
well spraying a little starting fluid into the air intake and trying to start it will tell you if it is fuel related or and elctrical problem, i guess that would be the first step, and narrow things down a bit, if it starts with the fluid it is a fuel issue, if not its elctrical.
check you spark plugs, if your fuel pressure regulator was bad and it was flooding the engine, it would have fouled your plugs, i guess id start with those two things and at least start narrowing things down.