Engine is hard to start?

Tiny
95CHEVYBLAZERQUEENS
  • MEMBER
  • 8 POSTS
  • 1995 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 17,300 MILES
Hi, Guys!

I've had this problem before and it cost me a lot so I am being very cautious. Here's the deal my car wont start. Before I would use a starting fluid and it would crank but I had to keep pressure on the pedal. So, I changed the fuel pressure regulator and the car started but then it started to stumble, choking. So, I was told it was the fuel pump. So, got the psi tested and it was at 40 psi. I changed it and the fuel filter still hard starting, idling rough but now the car won't start at all. It sat for three days and I went to start it and it started but I had to keep pressure on the pedal. So, I am totally confused as to what is going on so here are the things I changed.

Wires, rotor, distributor, spark plugs was wet from flooding and I cleaned them and put them back in. I changed crank case sensor, fuel injectors was checked with noid light, mapp sensor changed, idle air changed, throttle position sensor changed, except the coil, which was changed like in May four months ago. I also changed the fuel sensor relay.
I also noticed when I was stuck and it let me down I did not hear the ful pump click on. So I banged the tank and it acted like it wanted to turn over but wouldn't even with starting fluid.

I also noticed when the fuel pump was changed the assembly unit hose was a little pinched. So I dont know how much this would effect the psi level. So I bought a new unit but haven't changed it yet.

I know this is crazy but I really want to get to the heart of the matter and solve this problem before I burn the car or push it off a cliff. Lol. Thanks for your help!
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Thursday, September 10th, 2020 AT 12:47 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check your fuel pressure with a fuel pressure gauge and comeback with the actual pressure readings we start here and also you might want to check if the injectors are pulsing and spraying fuel into the cylinders-
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Thursday, September 10th, 2020 AT 12:47 PM (Merged)
Tiny
95CHEVYBLAZERQUEENS
  • MEMBER
  • 8 POSTS
I did check the fuel pressure and it was 40 psi. So, I changed the fuel pump 2 days ago and found a kink in the feeder line hose. The car did not start after severl cranks and I think I flooded the spark plugs as before. I think there are two problem and this is one them. But how or where do I gain access to the fuel line to straighten it out? Or should I buy a new line? The fuel line seems to vanish into the car frame from the gas tank.

Also, the next day the car started on the first click? I was shocked. Could be becaus the plugs were wet and the fuel pressure regulator is dumping or leaking fuel? So, should I change the spark plugs and what about the coil? Is there a way to check it with out a tool to see if it is getting enough spark to the plugs? Thanks!
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Thursday, September 10th, 2020 AT 12:47 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
What is your 8th digit VIN?

VIN W the fuel pressure should be 55-61psi

VIN Z " " " " 9-13psi
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Thursday, September 10th, 2020 AT 12:47 PM (Merged)
Tiny
TB374
  • MEMBER
  • 1 POST
  • 1995 CHEVROLET BLAZER
Engine Mechanical problem
1995 Chevy Blazer 6 cyl Four Wheel Drive Automatic

blazer will start but I have to keep turning over and shuting off I just replaced fuel filter and I can smell fuel
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Thursday, September 10th, 2020 AT 12:48 PM (Merged)
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hello, if you have that spider fuel system, I'd check fuel pressure, you need a gage for that. You have good spark at the plugs, injector pulse, during cranking?

If the cmfi system is leaking gas, about all you can do is replace the assembly. I'd try to check everything I could, first.
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Thursday, September 10th, 2020 AT 12:48 PM (Merged)
Tiny
FIRECATF7
  • MEMBER
  • 1 POST
  • 1995 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 112,465 MILES
How come I can only use a motor from a 95 in a 95 s10 blazer is there any way around this. I was told once it was because of a extra crank sensor
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Thursday, September 10th, 2020 AT 12:48 PM (Merged)
Tiny
MADMIKE1735
  • MECHANIC
  • 951 POSTS
Whoever said there is an extra crank sensor is sadly mistaken. 1994 was a CPI (central port injected) and was changed in 95 to A two-piece Central Sequential Multiport injection (SFI). I know for a fact a 95, and a 96 will bolt right up. Ive done it. I believe a 97 will work also. 98 is a totally different setup, and will not work unless you modify your harness to adapt to the 98 harness.
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Thursday, September 10th, 2020 AT 12:48 PM (Merged)
Tiny
DOCDAN
  • MEMBER
  • 1 POST
  • 1986 CHEVROLET BLAZER
Engine Performance problem
1986 Chevy Blazer 6 cyl Two Wheel Drive Automatic

I have been trying to troubleshoot the problems. The Blazer takes MANY attempts to start-almost like the carb is not getting any fuel. Sometimes we have to prime the carb with starter spray or gas, then must allow to warm up well before taking off. When going up a hill-the vehicle repeatedly dies and takes forever to get to the top. This has become a safety concern. I have changed out the plugs and fuel filter. I want to pinpoint the problem. Could this be a compression and/or fuel pump problem?
I was told that the fuel vacuum line could be the problem but still not sure.
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Thursday, September 10th, 2020 AT 12:48 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,230 POSTS
Hi:
It sounds like the fuel pump is bad. Have you had it checked for pressure and volume? That is what I would do. If it's good, then I would check for compression.

Let me know what you find.

Joe
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Thursday, September 10th, 2020 AT 12:48 PM (Merged)
Tiny
SHAYLEE
  • MEMBER
  • 1 POST
  • CHEVROLET BLAZER
Hi, I have a 1998 Chevy Blazer, approx. 66,000 mi, 4 x4. Recently it has been very slow to start. The engine will crank for a bit before starting. Sometimes I have to try a couple times to get it to start. Additionally, sometimes after driving the car, there is a faint gas smell. Any suggestions are appreciated. If this is a expensive repair let me know, I planned to get a new car in the spring, but I may have to move it up! Thanks! :Cry:
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Thursday, September 10th, 2020 AT 12:48 PM (Merged)
Tiny
E40WATER12
  • MECHANIC
  • 522 POSTS
First off all I would check all youre fuel injectors, For any signs of fuel leaks, Also check pressure at the pump and also injectors, Make sure youre battery fully charged.
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Thursday, September 10th, 2020 AT 12:48 PM (Merged)

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