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Engine low power

Tiny
CACTUS50
  • MEMBER
  • 13 POSTS
Did for both sides and it is correct. I am having trouble understanding why it will run smoothly if you disable either set of plugs. I thought there might be some cross firing from wires running
adjacent to each other, but have the new wires spread out so that should not be an issue.
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Sunday, December 3rd, 2017 AT 4:16 PM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
That is exactly why I said to re-check the firing order.
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Sunday, December 3rd, 2017 AT 4:16 PM (Merged)
Tiny
CACTUS50
  • MEMBER
  • 13 POSTS
Re-checked firing order and it is correct for o both intake & exhaust sides. When running rough it is producing black exhaust - lots of carbon - and smells almost like raw fuel- not oily. When running smooth the exhaust is clean.
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Sunday, December 3rd, 2017 AT 4:16 PM (Merged)
Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,540 POSTS
  • 1983 NISSAN TRUCK
  • 250,000 MILES
83 nissan 4x4, engine cranks and runs but seems like it has no power when you try to go. Its not bogging down it just seems weak.
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Sunday, December 3rd, 2017 AT 4:17 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
It has a lot of miles on it. Check engine compression. It may be getting weak. Also, check to see if the catalytic converter is plugging.
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Sunday, December 3rd, 2017 AT 4:17 PM (Merged)
Tiny
SICILIANPUNISHER
  • MEMBER
  • 1 POST
  • 1987 NISSAN TRUCK
  • 4 CYL
  • 2WD
  • MANUAL
  • 140,000 MILES
Engine Performance problem
1987 Nissan Truck 4 cyl Two Wheel Drive Manual 140000 miles

truck was running fine and all of a sudden started running real bad.I got a compression test done and the two back cylinders are reading under 25. The guy said I need a new engine.
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Sunday, December 3rd, 2017 AT 4:22 PM (Merged)
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
HI there, more than likely you have a blown head gasket between the cylinders, if this is the case it will be the head off re machine and crack test and a gasket set, far from a new engine and a good deal of your money in his pocket I feel.

Mark (mhpautos)
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Sunday, December 3rd, 2017 AT 4:22 PM (Merged)

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