Weak engine power on 1994 Isuzu Pickup

I have a problem with my 94 Isuzu Pickup with engine power. It seem to be weaker all of a sudden. It happened when im driving to work and my truck slow down to a point it seems i put on some brakes on or was pulling something behind me. I pulled over to see if my brake were the problem but didnt seem my brake were the problem. Now im thinking it has to do with my engine. When i step on the gas it seems to have a hard time moving forward. Its even more obvious when i go up hills. Whats worst is my gas consumption has gotten worst. If there is any additional information you need i would be happy to tell you. I hope you can help me with my problem.

by in Palos Verdes Peninsula, CA on May 02, 2011
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1 answer 1 comment
ANSWER by , May 03, 2011
Have exhaust backpressure checked for possible cat conv problem. Have the fuel pressure and volume checked. Make sure timing is set correctly. Have done at a qualified shop.
COMMENT by , December 17, 2012
i would check the clutch. my truck had the same problems and it was the clutch.