sirhk100
Explorer Addict
- Joined
- December 19, 2000
- Messages
- 1,770
- Reaction score
- 2
- City, State
- las vegas
- Year, Model & Trim Level
- '91
Small update on the expo. Last winter, once warmed up it would occasionally puff some white smoke for a few seconds when restarting after pumping gas or like running into a mini market. If it sat for a while it would never do it. Temps rise and summer comes along and no issues. Then sure enough, this winter it starts doing it again on occasion. So I figure head gasket or cracked head. I'll live with it till it gets bad. Well then about 6 weeks ago, I start noticing blue smoke for a few seconds on inital starts. Nothing major but enough to notice it and after 5-10 seconds it would clear up.
Well jump to about 4 weeks ago and it all gets worse, substantially... The blue smoke on startup turns into a massive thick cloud you can barely see thru for about 20-30 seconds! Talk about embarassing coming out after lunch to smoke out the whole parking lot. Once the massive cloud passed it would still puff a little just general driving. Well shoot, I've gotta pass smog in Jan to register this thing and we still do the tail pipe test here in Vegas. So...
Not knowing exactly how far I was gonna have to tear into it, I started by pulling the head on the side my gut said it was on. I forgot to mention, I'd fouled the same cylinder about once every 3-4 months so I assumed that was my smoking gun to tear into first.
Interesting enough, the cylinder I fouled actually didn't look too shaby. Just a TINY evidence of head gasket leakage. But the one front cylinder was definitely getting oil past the rings looking at the oil cylinder and the nice clean piston...
Well, rings... Crap, can't pull the oil pan in the vehicle so...
After some reading and discussion here on the forum, decided for the $350 it was better safe then sorry and I put new heads on it. Honed the cylinders, new rings, new heads, ground and lapped the valves, new head gaskets, all new seals on everything I touched and slapped it back together.
Random picture of it almost back together...
After realizing I couldn't count to 6 properly on the plug wires, I finally got the two that I had backwards flipped around when a 2nd set of eyes found my mistake that I'd tripple checked wrong!!! LOL And it fired up on Xmas eve.
Sitting at about 150 miles on it and it's running 100% perfect and should hopefully be good to go for a long time to come now! Gonna run it to about 500 miles, then change oil and sit on a regular oil schedule from there forward.
Anyways, that's my update... Freshened up the motor in the expo.
Funny part is along at the same time I also had my 6.0L chevy motor completely torn down for a very similar rebuild. Left side of my garage was chevy parts, right side was ford parts! LOL Got the Chevy motor back together and installed over the weekend also. If things go right and I get a couple last parts that my stupid dog chewed up, plug wires, I should be able to fire it up for the first time tonight as well I hope!
Well jump to about 4 weeks ago and it all gets worse, substantially... The blue smoke on startup turns into a massive thick cloud you can barely see thru for about 20-30 seconds! Talk about embarassing coming out after lunch to smoke out the whole parking lot. Once the massive cloud passed it would still puff a little just general driving. Well shoot, I've gotta pass smog in Jan to register this thing and we still do the tail pipe test here in Vegas. So...
Not knowing exactly how far I was gonna have to tear into it, I started by pulling the head on the side my gut said it was on. I forgot to mention, I'd fouled the same cylinder about once every 3-4 months so I assumed that was my smoking gun to tear into first.
Interesting enough, the cylinder I fouled actually didn't look too shaby. Just a TINY evidence of head gasket leakage. But the one front cylinder was definitely getting oil past the rings looking at the oil cylinder and the nice clean piston...
Well, rings... Crap, can't pull the oil pan in the vehicle so...
After some reading and discussion here on the forum, decided for the $350 it was better safe then sorry and I put new heads on it. Honed the cylinders, new rings, new heads, ground and lapped the valves, new head gaskets, all new seals on everything I touched and slapped it back together.
Random picture of it almost back together...
After realizing I couldn't count to 6 properly on the plug wires, I finally got the two that I had backwards flipped around when a 2nd set of eyes found my mistake that I'd tripple checked wrong!!! LOL And it fired up on Xmas eve.
Sitting at about 150 miles on it and it's running 100% perfect and should hopefully be good to go for a long time to come now! Gonna run it to about 500 miles, then change oil and sit on a regular oil schedule from there forward.
Anyways, that's my update... Freshened up the motor in the expo.
Funny part is along at the same time I also had my 6.0L chevy motor completely torn down for a very similar rebuild. Left side of my garage was chevy parts, right side was ford parts! LOL Got the Chevy motor back together and installed over the weekend also. If things go right and I get a couple last parts that my stupid dog chewed up, plug wires, I should be able to fire it up for the first time tonight as well I hope!