Hi I have a 1997 chevy blazer and I need some help because I'm at my wits end. I was driving in the snowstorm last Saturday and my blazer was running and driving normally. I parked it saturday night and came back out to start it sunday morning, and it starred but had an awful misfire and limited my rpms. To add on top of that, I had no movement in any gear. Like I said it was running fine when I parked it. Since then I changed the oil in the tranny and I have all gears but reverse, but it will also drive forward in neutral. For the running issue, a mechanic put new distributor cap and rotor on it, I put new fuel injectors and new plugs and a new ignition coil ob it. It runs now bit has no lower and misses like crazy. I also have to pump the gas to get it started. I have been getting po300, p1350, and po304 codes when I scan for dtcs. Any help would be greatly appreciated. Thank you!

 

First step, check fuel pressure and leakdown, then post all 4 readings. https://blazerforum.com/forum/2nd-ge...eakdown-88305/


Also check the spark plug routing on the distributor cap. Passenger side, 2, 4, 6, are in order on the cap, front to rear. Driver side is not in order on the cap:

 

I have an update. I found that I had no spark at cylinder 4. Replaced distributor again and now I have strong spark on all cylinders. Ran great for about 10 minutes then it shut off and will not restart at all.

 

What brand of distributor cap is installed on it now?

 

Ok so I have an update. I have spark and good fuel pressure. About 55psi and holds at 50. If I have spark, compression, and fuel, what could keep this thing from running?

 

Bad distributor cap, and, both of those fuel pressure numbers are a problem. This thread explains how to test the fuel delivery system. Post all 4 readings and we can analyze them for you, and figure out what the problem is. https://blazerforum.com/forum/2nd-ge...eakdown-88305/