Ok so i bought this 1999 Blazer Yesterday.. Guy said it needed a Fuel Regulator because the screen on it finally gave out and made gas shoot out of the tail pipe. He offered to replace the part for me at no charge so i agreed. He called me after it was fixed and said it was running and i could pick it up when ever i was ready, so when i came to his house the blazer was running, He told me that i needed to put gas in BUT TO LEAVE THE CAR CRUNK while putting fuel into it because it was hell to get it crunk and that i should replace the spark plugs asap due to gas flooding them.. I drove the car home with no probles what so ever. Got home cut the truck off and tried to start it again, It sputtered a bit and crunk. Ok now the next morning i came outside and tried to crank it again. I would not start altho it would act like it was about to for a sec or 2 then just keep turing over. Could this be a problem with the spark plugs or did this guy blow smoke in my *** and it needs a fuel pump. Any help would be great tyvm

 

From what I've learned you should start with a "fuel leakdown test". You can search that term and come up with a ton of threads discussing the process. Here is one link that goes a little further to determine if your fuel pump needs to be replaced. https://blazerforum.com/forum/2nd-ge...d-75428/page3/

 

Ok so i replaced the fuel filter and put gas in the intake and it fired right up and drove it for about 45mins. Cut the car off and it sat for a few hours and now wont crank. What could cause this? Only problem is getting it started not keeping it running or driving. Ty

 

When you say it "won't crank", does that mean that you turn the key and the engine won't even turn over? Does anything happen (lights on dash, fuel pump turns on, etc)?

 

The engine will turn over with no problem and all the lights on the dash work. i know its not the battery because i bought a new battery the same time i bought the fuel filter which was yesterday.

 

If the pump is good my guess is its the spider

 

First thing is to check fuel pressure and leakdown.

When you first turn the ignition to the RUN position, (do not start the engine) the pump will run for approximately 2 seconds and then shut off. Pressure must be tested while the pump is running. Pressure must be 60psi to 66psi. After the fuel pump shuts off, fuel pressure must remain above 55psi for at least 10 minutes. If it fails either part of this test, it means there's a problem. It does NOT identify the problem, it only tells you that a problem exists and further testing is necessary to determine what the problem is. Post your results.