2.8 strange problem

[scavengerspc]

87 Blazer with a 2.8 litre v6.

The engine has a severe miss, so I wanted to narrow things down.
BTW-This truck had set for 3 years and I recently decided I wanted to do a major rebuild.

Anyway, first i used a laser temp gauge and found that, after a few minutes at idle, 5 cylinders were running at around 210 F. #2 was only at about 100 F. So I pulled the plug and it appeared to be covered in gasoline (I expected an oil foul).

I checked for spark and it was fine. Good strong arc.

Next I did a compression test and got 85 lbs crank and 75 lbs running.
Not bad so I replaced the plugs and started the engine again and still it had the miss and severe power loss. I pulled the #2 and it appeared to be coated in fuel again.

Does anyone have any suggestions where to go from here or what to look for?

Thanks

Dave

[BlazerLT]

75 is very low. Should be near 150psi is I am getting things right.

Do a tuneup with a cap and rotor and new plugs and see if it goes away.

[scavengerspc]

Thanks for the reply BlazerLT.

I replaced the cap, rotor and the plugs.
I also used a known good plug wire to test and still the same results.


Dave

[BlazerLT]

Just for shits and giggles, swap another wire in there just to see if the spark problem will go away.

[OverBoardProject]

I'd also try pouring ATF fluid in that cylinder (through the plug hole) and let it sit for as long as possible to hopefully help lousen the rings

[scavengerspc]

Thanks for the replies so far guys.

BlazerLT-I think you mis-read my first post. I check #2 for spark and I got a strong arc.

OverBoardProject-Oh Man! I remember that from years ago. (This is my first project in 15 years). I might give it a try. First though I am going to put an anti fouler (if they still make em) over the plug and try it again.

I know 85 lbs is low for cranking but isnt 75 lbs running perfectly acceptable?

Dave