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good job ! thanks for following thru to the end and posting the final remedy

sounds like my 91, my fix was exhaust leaks. check the torq on your exhaust manifold and look for cracks on the underneath side of the maifold

does your fuel gauge on your dash work ? Your Fuel Gauge is a good indicator of the condition of your In-Tank Submersible Electric Fuel Pump Ground ! Turn your Ignition key to the On position with out starting the Engine. If the Fuel Gauge moves to the full position and stays there and...

Harbor Freight sells a $16.00 Vacuum/Fuel pump Tester. It's well worth the price considering it will take the guess work out of the question for the rest of your life! Check your exhaust system for proper torq/cracks/leaks or warps up stream of the Oxygen Sensor. If air is entering the system...

good job my friend

doubt it's just the gasket but you'll see , I don't remember how many Expansion Plugs are under the gasket but make sure you you scratch and scrape and poke them with a sharp object to look for weak spots. Now is the time to replace them . I Think they were 3/4" plugs. I'll be in San Jose on...

I just did this repair. I used the copper plugs with the lip and put a light layer of sealant on the plug to aide the installation. clean the hole in the block with sandpaper. the ones under the bellhousing were not leaking so I left them alone. Make a note that one of the plugs under the...

yup, same thing happened to me. My Tech said to look for exhaust leaks between the combustion cylinder and the o2 sensor, So it looks like your vaccum cleaner diagnosis is spot on. I removed my exhaust manifold and found 3 major cracks on the underneath side, I purchased a new manifold from...

tease me all you want ...I'm just glad to see there's 4 active members on this Forum :ROFLMAO::sleep:

oops , I posted the wrong info.... the block expansion plugs are 1 3/4 "

My "91" had two of the cupped washers missing. I didn't want to go to the hasel of locating new ones so I simply made my own ! I chucked up a 3/4" or 7/8" Hole saw in my drill press and drilled two plugs from a piece of 3/8" flat plate . the result was two Discs 3/4" in diameter with a hole in...

No it's not hard at all .yes the discs, on my "91" the large ones were 2'' AND THE SMALL ONES under the Exhaust Manifold Gasket on the Head were 3/4" . Drain coolant and simply drive a flat screw driver thru the Brass freeze Plug and pry out old plug. Clean the block opening with a wire wheel...

attack a small piece of toilet paper to a stick and hold it by the suspected leak. An exhaust leak will blow and flutter the toilet paper ! you'll have to get creative to block the fan breeze or just remove the belt during the test

straight edge the mating surface of both your exhaust and intake manifold. I found both of mine to be out of tolerance and used my 48" floor mounted Belt sander to dress the mating surfaces. cranking down the bolts to seal a crooked exhaust manifold is a prim reason for a cracked exhaust...

exhaust leaks between the combustion cylinder and the O2 sensor will not pass a smog check . The 02 Sensor sees the fresh Oxygen entering through the cracks by way of the Venturi Effect and adds more fuel to the mixture to compensate for the misinformation. the results are a rich fuel mixture...

excellent suggestion

Don't discount this possibility ! take your coil off and shake it. Mine rattled and I replaced it. Also I haven't seen anyone suggest checking Vaccum , If you don't have a gauge..... take a picture of the throttle body where all the Vaccum lines connect. Leave the fuel pressure regulator and...

I have a 91 yj and had to move the stock seat back 2 or 3 inches. I simply re-drilled the 4 holes in the top of the seat pedestal and re-mounted the seat farther back. Ask your Hubby to remove the 4 nuts holding the seat down and pull the seat out, you might be able to reposition the holes far...

No Joy. I still had a flat spot. And when I wiggled the CPS plug I caused a major miss at Idle. I removed the CPS plugs nut and keeper from the fuel rail and moved the Wire loom to experience a total power loss to the spark plugs. looks like a replacement female CPS connector is the next step. I...

I replaced, plugs, plug wires, Distributor Cap and rotor. that made a remarkable difference but there's still a small flat spot at high RPMs. I have an o2 sensor ordered for pick up today. I'll install that and then clean the Throttle Body weather it need it or not and post my results. ( No CEL...