pick up coil in dist. could do this old GM's it was very common and i've seen it in Fords a few times.Also the dist. module could be acting up.

 

I think Bashby is right on this one.


A Clogged cat will affect your timing too.

It will screw everything up, EGR, etc... etc...

 

He does.

The only engine in this year range with, gear on gears is the 300-I6.

 

Summit has a pair of longtube headers for 139.99 with premium gaskets and all the hardware so thats gonna be the first purchase along with a bigger freeflowing exhaust

 

Cant go wrong with the headers and duals, like I said I'd like to do that to mine but $$ doesnt permit at this time FWIW, my non cat truck came with an air pump, I eliminated it and used plugs in the exhaust manifolds. All it was doing was diluting the exhaust emmisions, It brings the parts pre million of bad exhaust down but you are still poluting at the same parts per mile

 

lol sounds about right to me for Detroit in the 80's. I did notice however after the truck sat for about a week without running when I started it the pump pulley squealed really bad till the truck warmed up but it hasnt done so since then so im not really worried about it. I checked the tension on all the belts, and removed my A/C pulley since it doesnt work at all and wont hold a charge

 

Ok I removed the cats from the truck, and came upon the rear air pump hose I think its called, that was welded to the tailpipe so I cut it on a flat angle so it can be re-welded back on, drove the truck and it still falls on its face. I know its prolly cuz that tube isnt connected to anything, and I still dont have that much brake pressure, but im sure a timing adjustment is in order again cuz now with it running off of straight headers and downpipes I can hear it idling a little off.

 

The lack of back pressure will mess with the timing just as much as having too much.

If it's still doing the same thing with the cat removed, then I'd check the harmonic balancer, it's possible that it's slipped making the timing marks wrong.

Check your engine for TDC (Top Dead center) with the first cylinder, if the marks on the balancer is wrong, (The mark on the harmonic balancer should line up with TDC mark etc) make a new mark with a marker on the harmonic balancer, and try retiming it to the new mark.

If in doubt, have someone else check it,.

 

I disagree with this. Have you checked fuel pressure?

 

im going to tap into my intake line where it meets the regulator and see what the pressure is running up to the motor

 

It sounds like its not getting fuel for some reason if you have pressure then I'd suspect a MAP/MAF sensor next

 

on a side note the cats were part of it so you didnt call it wrong really.. as soon as I cut the tailpipe giant pieces of the honeycomb fell out on its own, so both converters were trash

 

The lack of back pressure will throw off the proper timing curve.

But I am not saying this is his problem.

Lack of backpressure due to running strait pipes or no exaust will make the engine ping at factory settings.

It also can keep the EGR valve from working properly, which will also add to engine ping.

 

well its not pinging tho thats the problem I fixed the ping, it just falls flat on its face

 

OK I think I ran into a problem... the feul pressure coming from the high flow framerail pump should be in the 30's psi wise right? the damn gauge they gave me only goes to 15