Low engine power for about ten to fifteen minutes

2004 MITSUBISHI TRUCK
50,000 MILES • V10 • 4WD • MANUAL
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RAYMOND M. ALEJANDRO
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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.
Oct 12, 2017 at 4:35 AM
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MHPAUTOS
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Have you/can you check the valve clearances and do a compression test?
Oct 12, 2017 at 4:56 AM
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RENEE L
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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
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Oct 12, 2017 at 4:56 PM
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RAYMOND M. ALEJANDRO
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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.
Oct 14, 2017 at 4:25 AM
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MHPAUTOS
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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.
Oct 14, 2017 at 5:03 AM