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Low engine power for about ten to fifteen minutes

Tiny
RAYMOND M. ALEJANDRO
  • MEMBER
  • 2004 MITSUBISHI TRUCK
  • V10
  • 4WD
  • MANUAL
  • 50,000 MILES
Sir, my Fuso super great 10m20 engine was low power during a couple of time travel then after ten to fifteen minutes of rest it will run again in normal.

I already replaced fuel filter including the feed pump on injection pump. Also clean the air filter, unfortunately the issue was the same. In my observation low power was occur during the engine rise of engine temperature. Any suggestion would be appreciated.
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Thursday, October 12th, 2017 AT 4:35 AM

4 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Have you/can you check the valve clearances and do a compression test?
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Thursday, October 12th, 2017 AT 4:56 AM
Tiny
RENEE L
  • ADMIN
  • 1,257 POSTS
Hi RAYMOND M. ALEJANDRO,

If you decide to conduct the compression test yourself here is a link to an article from our site with written step by step instructions, with pictures and video to guide you:

https://www.2carpros.com/articles/how-to-test-engine-compression

If you have any questions or need further advice please reply to your post and one of experts will be happy to help you.

Thank you for visting 2CarPros and have great rest of your day!

Renee
Admin
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Thursday, October 12th, 2017 AT 4:56 PM
Tiny
RAYMOND M. ALEJANDRO
  • MEMBER
  • 2 POSTS
Any suggestion to all mechanics! There is no problem in the compression of engine. My trucks was fitted with electronic fuel injection pump zexel tics! Low power was happen during loaded specialy during going up hill but when the engine rest about 10 to 15mins it will back to normal then after 2hours the problem was occur again.
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Saturday, October 14th, 2017 AT 4:25 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
The problem may well be in the injection and metering of the injectors, are they original injectors and have they been calibrated to the mod pump? Are you seeing black or white smoke during low power high load? Just trying to eliminate a few things here, remember that we are working blind.
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Saturday, October 14th, 2017 AT 5:03 AM

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