Isuzu: Knocking?

I own a 1990 Isuzu Amigo xs with the fuel injected 4cyl (2.6L I think) It sat
for about 8 months prior to my buying it. I was driving to work on the
interstate and noticed it vibrating violently. I took the first exit and
noticed the knocking but its only when I accelerate, I let off the gas and
there is nothing only other thing I noticed Is a HUGE lack of power. what is
wrong with my truck? Timing, Flat spot on the cam, Clogged injector?

My horn on my vehicle blows sometimes in the middle of the night. A couple
of times it just started blowing while I was sitting in traffic. My vehicle
power locks are always clicking to lock and sometimes when the horn blows
and I click the unlock on my power locks the horn stops blowing.

"Stealth" <u34785@uwe> wrote in message news:..