Rad_88Comanche

Thanks! Yes! Just got a new compression tester (dry test) today and here is the reading: 1. 130 2. 140 3. 149 4. 148 5. 105 (got 119 and 125 - retested) 6. 115 (130 on retest) unhooked the relay from for the fuel pump, still slight fuel mist from spark plug holes. Stumbles a bit with acceleration (idle is fairly steady), still smoking a little and has black liquid coming from tail pip (seems like oil, but not sure) — doesn’t smell sweet, just heavy exhaust smell. (Like old snowmobiles—lol). :) took a video which will maybe help: IMG_4150.MOV

I don’t think it smells sweet...not like coolant, more exhausty....

Thanks! Just wanted to give a little bit of an update. We finally got around to working on the Jeep again. Changed all the relays and low and it fired right up! I was super excited... changed the oil and put a new filter in it as it had a ton of gas in it (from that fuel injector that was stuck open). Now she runs! However lots of white smoke and water coming out of the exhaust—also does not want to accelerate - backfires a little bit. any ideas? Will continue going through Cruiser 54’s steps as well:)

Just giving an update on my crank no start situation. We are going through the mega list, step by step :) Currently on step 2 and eliminating the C101 connector—she was looking real rough! Fingers crossed as I’m back to needing my truck next week 🤞🏼

No timing light handy. I saw that harbor fright sells them for 30 bucks with mixed reviews. I want to keep trying things, but it’s also my daily driver so I’m starting to think maybe I need to bring it to a shop to help diagnose what’s going on. 😬

Yes checked for cracks and replaced vacuum line:)

I believe so—we rechecked it, made some adjustments and still no luck. Followed the indexing (minus the cutout of the old cap), tried one tooth back and forward and still no fire. We have noticed quite a bit of play in the rotor when we rotate the harmonic balancer back and forth (between the rotor and the harmonic balancer).

Such an honor for my first reply to be from you as we have been reading all your tips. No we haven’t “indexed the distributer” and cut a hole out of the old cap — will do that. Only did step 12 to set top dead center. We originally replaced the line to the MAP sensor before it wouldn’t start. That was what was odd—we changed a few lines and elbows and then two days later it I’m having a no start. Since then we have swapped them back and forth (from new to old lines and back again). Will focus on figuring out the running rich after we get it running again:) One last note, doesn’t feel like a lot of vacuum out of that hole on the throttle body (that the line connects to) when cranking the engine... Thanks for your help.

Hello there! I have an 1988 Jeep Comanche Eliminator 4.0 (renix) which had been running good, but rich. Being in Los Angeles, I need to pass smog. Upon inspection and changing out some vaccuum lines I figured I was good to go. Two day later, my Comanche hesistated to start, I got her running and drove up to the store -- I pulled over as I think I rememeber hearing a clicking noise cominig from the hood, was idling a bit rough and a puffing a bit of white/grey smoke. I'm sometimes stubborn so I carried on, shut her off and when I went to restart it, it cranked but wouldn't start. I have spark, fuel and I think compression is okay This is what I have done/replaced the past few days: Crank Position Sensor (Napa part, did modification to increase voltage - .4 AC) Replaced Distributer and believe timing is set correctly New Spark Plugs (Champion Copper) and Spark Plug Wires Replaced Starter *(4 months ago) Bosch Rebuild Fuel Injectors *(1 year ago) Tested: Spark Plugs -- blue and hot (getting to all 6 clyinders) Fuel Pressure: 39 PSI Tested Fuel Injectors MAP sensor -- .5 and 4.8 and seems to decrease with vacuum Battery is testing over 12 volts, also tried another battery The #2 cylinder spit out gas when testing compression - pretty sure I ruined the compression tester, the number 2 injector may have been stuck open to cause this, but is now corrected and no longer an issue. I'm thinking possibly Timing Chain may be an issue? Or? Any ideas/advice would be greatly appreaciated. Thank you so much!