Stewyn

hey guys,

So I've got one i cant figure out...

The other day my sub just suddenly died on me on the way home. There wasn't much the led up to it, I had been driving for approx. 10 miles, and the engine had a tiny sputter, went to give it a little gas and it shut off completely and would not restart had to get a tow home. Next day it began,
-still would not start, cranks as usual.After many many tires i get the slightest sign of combustion, one, single, extremely weak cylinder fire.
-tried gas down the tb, nothing. jets as spraying gas on their own just fine, nice cone shape.
-checked for spark on every plug, all fire just fine.
-timing is still fine,went tdc #1 and checked the dizzy and it lined up just fine with #1
-pulled the obd1 code #33. map sensor. got a new one... still nothin.
- compression test 1.150psi 2.160psi
3.150psi 4.160psi
5.120psi 6.150psi
7.130psi 8.150psi

-unhooked the battery for an hour to rest truck, code cleared.
-------still no start. this truck has ran perfectly fine up until now. only 148547 miles.

Your input is greatly appreciated.