DonkRado
NAXJA Forum User
- Location
- Charlottesville, VA
Would backed out manifold bolts & smoke at the manifold burn oil & smoke at tailpipe?
'90 4.0 Renix
Ok, I'm really sorry that I could've searched more extensively on this, but I have an exam in 2 hours and I have about 4 pages of essay to write before it. I didn't find anything directly related in the 20 or so threads that I scanned through. I noticed a coolant leak on the XJ earlier this afternoon and decided to take a 10 minute break from studying to swap the hose and clear my head. Of course, disaster strikes and the job ends up taking considerably longer and plenty of coolant is dropped. After I got it all back together I cleaned as much coolant off of the underhood components as I could and cranked it up to burp the cooling system. As I was watching the spilled coolant burn off, I decided to check up on my CCV system a bit, and blipped the throttle while watching the FAI return hose. Blah blah blah, to sum this up, several of the manifold bolts have backed out and I'm getting some smoke leaking out from where the manifolds mount to the block. Can't tell which manifold at this point, but it doesn't absolutely stink, so I'm guessing it's the intake.
Here's the $64K question:
Could a bad seal at the manifolds be causing my excessive white/grey smoke from the tailpipe and really high oil consumption? I'm planning to get a leakdown test in the next few days, but is there a chance that this is the cause and not piston ring blowby?
I'll just add these bolts to the list of the finger tight or backed out ones I've found since I've had the car (under a month). It's amazing to find so many loose bolts on a "new" *cough* excuse me, !REMANUFACTURED! engine with just 36K miles on it.
I guess it's a good thing that I expected a project when I got this car. I just didn't expect to be rebuilding it from the ground up.
Oh, and another thing... I know this is unlikely to help me, but don't most or some of the remanufactured engine sellers have a replacement warranty that I might be able to check into? Would it be transferrable if they did?
Unfortunately, I get the feeling that even if they did, it might have been voided by poor PO maintenance. I'll have to look through the paperwork again to find out the remanufacturer, but that'll have to wait for later. Thank you for any help guys.
'90 4.0 Renix
Ok, I'm really sorry that I could've searched more extensively on this, but I have an exam in 2 hours and I have about 4 pages of essay to write before it. I didn't find anything directly related in the 20 or so threads that I scanned through. I noticed a coolant leak on the XJ earlier this afternoon and decided to take a 10 minute break from studying to swap the hose and clear my head. Of course, disaster strikes and the job ends up taking considerably longer and plenty of coolant is dropped. After I got it all back together I cleaned as much coolant off of the underhood components as I could and cranked it up to burp the cooling system. As I was watching the spilled coolant burn off, I decided to check up on my CCV system a bit, and blipped the throttle while watching the FAI return hose. Blah blah blah, to sum this up, several of the manifold bolts have backed out and I'm getting some smoke leaking out from where the manifolds mount to the block. Can't tell which manifold at this point, but it doesn't absolutely stink, so I'm guessing it's the intake.
Here's the $64K question:
Could a bad seal at the manifolds be causing my excessive white/grey smoke from the tailpipe and really high oil consumption? I'm planning to get a leakdown test in the next few days, but is there a chance that this is the cause and not piston ring blowby?
I'll just add these bolts to the list of the finger tight or backed out ones I've found since I've had the car (under a month). It's amazing to find so many loose bolts on a "new" *cough* excuse me, !REMANUFACTURED! engine with just 36K miles on it.
I guess it's a good thing that I expected a project when I got this car. I just didn't expect to be rebuilding it from the ground up.
Oh, and another thing... I know this is unlikely to help me, but don't most or some of the remanufactured engine sellers have a replacement warranty that I might be able to check into? Would it be transferrable if they did?
Unfortunately, I get the feeling that even if they did, it might have been voided by poor PO maintenance. I'll have to look through the paperwork again to find out the remanufacturer, but that'll have to wait for later. Thank you for any help guys.