So I have just fixed my missfires and other issues.. Its run fine twice for a total of 15miles and then I'm driving along just now and suddenly lose power and start hearing a weird poppoing/clacking sound. Smoke starts filling the cab so I stop and the engine dies. I jumped out praying that its finally on fire and going to burn down!

No such luck so now I see smoke coming from valve cover area and see oil seeping onto the manifolds.. So that's not the problem and I can tighten that up.

I did notice coolant all over the passenger side of the engine bay in the back area. I noticed that this one piece may have separated somehow and causing it to spew.Ive circled the suspect spot and added my engine codes indicating catalyst issue. Could these to be related or is the catalyst the CATs underneath?

The truck ran for a few months (maybe twice a week) with misfires in 5 and 8 and causing the CATs down below to turn red hot each drive. I fear this may have destroyed them, but once I got the misfires fixed and O2s replaced, it has run great!

For the time being, I need to figure out this coolant spew and why the truck is now hard to start and wants to die when I put it in gear. It does idle just fine and it's not overheating.

Sorry for long post.

Engjne coolant is biege from having some stop leak in it, nd if you zoom in, its all over that back corner..

This looks like the source.. can i bypas it?

Up close these look separated..

 

The piece you have circled is the cruise control. It looks like the small hose coming out of the reservoir (bottom) is not slid all the way inside the hose.

Brian.

 

Ok I found the spewing was a ruptured hose under the coolant tank. I see that the thing I was looking at was a vacuum design for cruise control.

But I still can't get it to run now.. Would start in the begining.. Now its just clunking and turning over..

 

So I have yellow oil in my oil cap.. I guess I know what's happened here..

is it possible for coolant to get in to the oil through the intake gasket or is it only through a blown head gasket???

 

What does your oil look like?

 

Moisture in the coolant cap is normal if you do short drives primarily. Condensation in the engine winds up there unless you go for a long drive and burn it all off. like mentioned above check the end of the dipstick, if that looks milky then you have a bigger problem.

Pull spark plugs 5 & 8 and look inside the cylinder for coolant. That would be either head gasket or cracked block. How did you fix the misfires? New spark plugs? If you have coolant in the cylinder that will work for a while then the misfires return. Also coolant in the cylinder, in addition to making your car run rough, would mess up your O2 sensors and probably throw that catalyst code which goes along with multiple misfires.

 

If there was a ton of steam/moisture in the engine compartment, you may have sucked some moisture in the air cleaner housing and then across the MAF sensor (ruining it). Since you say it ran and idled after the event earlier, most times, the engine will idle even with bad MAF.

The cat issue is subject to what type of codes you're getting.

Brian.

 

No sign of moisture on dip stick.. This is a the P38 Range Rover motor which is supposedly less prone to head gasket failures...

I found the #5 and #8 wires sitting against exhaust and were separated causing the spark to arc...

Once I added oil which was very low, it ran fine.. Also I see that the coolant line that burst ran to the intake near the MAF entry. This must have allowed air in the system and caused the rough and bad running...

I'll update tomorrow how it runs...

 

You are making dumb mistakes. Wires on manifolds, low oil, hoses not in all the way etc.

slow down, think of what you're doing and process it. Next time you wont get so lucky. Rovers are tough trucks, but they are also delicate.

 

And what is all over your pipes for the heater?