1998 Intrepid White Smoke- Just Started

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It started when you added MMO. That could do it, meaning if you added it to oil and fuel it will smoke somewhat under use as it decarbonises the engine and also has the potential to burn off.

It may also be cleaning really well and dislodged a good bit of items off the internals causing the other recommendations about the gasket.
 
Originally Posted By: crazyoildude
if this started immediatly after the mmo run the mmo through and fill the tank with gas and all may be fine


I noticed Black hard carbon desposit fresh on the tailpipe and it was dripping, the water dripping from my tailpipe had no distinct smell. Didn't smell like anti-freeze, maybe a touch of gas smell, but that could be expected at the end of a tailpipe.
 
Originally Posted By: Vikas
Originally Posted By: Topo

7. I have a bad break booster, that I know, when I step on peddle a swishing air noise is heard, been diagnosed by shop. Not that this is the issue, just wanted to state this.


Are you losing brake fluid? Brake fluid in the intake would cause the engine to smoke and I think it will be white smoke.


It doesn't look like it, I only had the car for a bit and only put 150 miles on it, but I was wondering why there was so much break fluid( old and dirty around brake resevoir) I wiped it down to make sure it isn't leaking, will keep a close eye on it..Thanks
 
Originally Posted By: JamesBond
Originally Posted By: Topo

3. Did add some marvel mystery oil to crankcase and fuel, this is when I started seeing the white smoke and I changed the PVC valve out, which didn't seem bad( still rattled).



If you change thermostat, then the car starts smoking - it could be the head gasket.

If you add MMO to oil and gas, then the car starts smoking - it's probably the MMO.

If you change thermostat AND add MMO at the same time, then the car starts smoking - the problem could be either.

This is why when I trouble shoot I only change one thing at a time.

Run out this tank of gas, then change oil with whatever oil you were using before in order to eliminate some variables. If it still smokes, then it could be the head gasket. Don't add any "Head Gasket In A Can" type additives


1. I ran it after the thermostat change, filled the tank with anti-freeze/Water and ran the car until it was hot, refilled again and then took it for a drive, checking the fluid when I got home, everything was fine. It was the next day, I put marvel mystery oil in the fuel system and still no smoke until I took it for a 17 mile ride, then I noticed the smoking. I ran it additional miles, it would only smoke if revved extremely high. Which I didn't want to do, but I was trouble shooting.
 
I appreciate everyone's input, thanks a lot guys, you all had very valuable and valid information. So far the head gasket theory may not be an issue. The antifreeze level was checked by my father and he said it is the exact same spot it was at cold full mark. So that is a relief so far.
 
Well found out my issue. The 13,000 mile water pump that was on my car is bad. Bearings going. Leaking anti-freeze down through the primary and secondary weep holes. Parked the car, and getting fixed. New timing chain and tensioner and guides will also be installed at the same time. Have to drain oil, more than likely some coolant leaked past it, will find out when he pulls pump. May do a motor flush with Lubro Moly Motor Flush if needed..Chris
 
Originally Posted By: Topo
May do a motor flush with Lubro Moly Motor Flush if needed..Chris


Don't do it.

If you want to "flush" the motor do a few short OCI with a inexpensive dino oil.
 
I have been doing some some short intervals of 3,000 miles with PYB. We shall see how sludged it is, they have to take half the engine apart to get to water pump. More than likely I won't use it. We shall see what conditions the top of the motor looks like, I don't think the engine is sludged up at all. Just worried about the anti freeeze and how much got in the oil, seeing no signs of sludging from anti-freeze, but I only put 1000 miles on it when the coolant loss happened.
 
Was the pump made in China by chance?
whistle.gif
 
We are going to find out all that information Thursday when the car engine gets torn into. It probably a remanu. pump made in China. I'm getting the best Napa has and I looked at it, looks to be well constructed with good bearings, in addition it's made in U.S.A.
 
Originally Posted By: antiqueshell
Originally Posted By: Topo
May do a motor flush with Lubro Moly Motor Flush if needed..Chris


Don't do it.

If you want to "flush" the motor do a few short OCI with a inexpensive dino oil.


I have some formula shell i bought for $1.99 a bottle, that should do the trick for a couple short O.C.I.
 
Originally Posted By: Topo
We are going to find out all that information Thursday when the car engine gets torn into. It probably a remanu. pump made in China. I'm getting the best Napa has and I looked at it, looks to be well constructed with good bearings, in addition it's made in U.S.A.


I hope it isn't their house brand. Napa has a lot of "good stuff", but their Napa brand water pumps aren't in that category. Of the many brands of water pump I've used over the years there are two that stand out as being cheap junk. Napa and Airtex. Blank white box with a sticker on it is a better bet any day of the week.
 
Originally Posted By: yonyon
Originally Posted By: Topo
We are going to find out all that information Thursday when the car engine gets torn into. It probably a remanu. pump made in China. I'm getting the best Napa has and I looked at it, looks to be well constructed with good bearings, in addition it's made in U.S.A.


I hope it isn't their house brand. Napa has a lot of "good stuff", but their Napa brand water pumps aren't in that category. Of the many brands of water pump I've used over the years there are two that stand out as being cheap junk. Napa and Airtex. Blank white box with a sticker on it is a better bet any day of the week.


They sell 2..One is remanufactured and one is not and the one that is new is made in USA. You can spin the blade on the pump and tell which one of the two has better bearings.
 
Originally Posted By: MetalSlug
if you pull the oil dip stick and see any small smoke coming out ?


Never seen that yet.
 
I think that MMO is burning off. Mine smoke too after add seafoam to crankcase, will change oil this weekent.

btw dont listen to those that first saw white smoke, immedialy call it bad head gasket
frown.gif
.
 
Last edited:
Originally Posted By: MetalSlug
I think that MMO is burning off. Mine smoke too after add seafoam to crankcase, will change oil this weekent.

btw dont listen to those that first saw white smoke, immedialy call it bad head gasket
frown.gif
.


+1
 
I been behind lots of Intrepid 2.7 Liters in the last 3 weeks. I have yet seen one that didn't smoke white and sadly I have seen many puff out blue and black smoke, LOL!.
 
Finally car was looked over thoroughly by mechanic, the correct diagnoses was a cracked thermostat housing and the clamp was loose on the hose, in addition found my leaking oil I have been seeing on the front part of the under carriage, it was the oil sending unit leaking. I'm so happy I don't have to do the water pump yet. This leaking makes sense, it gave me the impression it was coming out of the weep hole it just was leaking around the hole from the cracked housing and not actually out of the hole. I had the thermostat and bottom radiator hose changed recently by a shade tree mechanic, lesson learned.
 
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