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2001 Ford Explorer dead cylinder

Tiny
HAPPYDRIVE55
  • MEMBER
  • 2001 FORD EXPLORER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 107,500 MILES
I have a problem with a cylinder that has spark and fuel and it will not fire. The compression is 150psi. I have changed the coil pack the plug and wire and the injector. I checked the vacuum lines and they are good. I have checked the resistance on all the elec. And the cylinder still will not fire. Any help will be appreciated.
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Monday, May 17th, 2010 AT 8:58 PM

9 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,133 POSTS
If it has spark, fuel, compression, and the timing is right, it has to work. Are you getting a good hot blue snapping spark? If you remove the plug, is it wet with gas?
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Monday, December 21st, 2020 AT 11:21 AM
Tiny
HAPPYDRIVE55
  • MEMBER
  • 5 POSTS
Yes the plug has a good blue spark and yes there was alittle gas on the plug.
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Monday, December 21st, 2020 AT 11:21 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,133 POSTS
Then either compression is low or timing is off. But you checked and said they were okay. One of the 4 things I mentioned has to be weak or bad. If they are all good, they cylender has no other choice other than to fire.
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Monday, December 21st, 2020 AT 11:21 AM
Tiny
HAPPYDRIVE55
  • MEMBER
  • 5 POSTS
The compression is 150psi and the timming is fixed and there is only a crank and cam sensor and I have not asked the the guy that is working on it if he has checked them yet.
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Monday, December 21st, 2020 AT 11:21 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,133 POSTS
It sounds like everything is good. That is what is confusing for me. A bad crank or cam sensor could cause the problem. When you think about it, if the fuel is there, the spark is good and at the right time, and you have good compression, it has to work. Your compression is great, you said the spark is good and the plug is getting wet. THe only thing I can think of is the spark is at the wrong time. That is the only thing that makes sense.
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Monday, December 21st, 2020 AT 11:21 AM
Tiny
HAPPYDRIVE55
  • MEMBER
  • 5 POSTS
I will find out here in alittle while if he has checked the cam and crank sensors yet.
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Monday, December 21st, 2020 AT 11:21 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,133 POSTS
Let me know.
Joe
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Monday, December 21st, 2020 AT 11:21 AM
Tiny
HAPPYDRIVE55
  • MEMBER
  • 5 POSTS
I found out the cylinder was not dead just a low idel speed. The guy found out the valve was bad and it was firing just not at low speed. I could kill the guy. The car is not mine, it was my dads and he just got it and had it for 3 days, glad we did not pay to much for it. Sorry for all the miss info. The guy was telling my dad one thing and telling me another. So thanks for the help and have a great day.
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Monday, December 21st, 2020 AT 11:21 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,133 POSTS
I'm glad you found the problem. Let us know if you have questions in the future, and thanks for using 2carpros. Com.

Joe
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Monday, December 21st, 2020 AT 11:21 AM

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