Water pump problem.

I just replaced the water pump on my 93 Cherokee (4.0 inline six) and
there seems to be a bigger issue at hand. My wife was driving it when the
water pump failed, she said that it ran hot but there was no noticeable
smoke. Now with the new water pump on the vehicle, there is smoke coming
from the engine block (where the spark plugs insert) and the engine is
still running hot. Any ideas to my problem?

wodell1 did pass the time by typing:
> I just replaced the water pump on my 93 Cherokee (4.0 inline six) and
> there seems to be a bigger issue at hand. My wife was driving it when the
> water pump failed, she said that it ran hot but there was no noticeable
> smoke. Now with the new water pump on the vehicle, there is smoke coming
> from the engine block (where the spark plugs insert) and the engine is
> still running hot. Any ideas to my problem?

I'd start by pulling out and replacing all the spark plugs. They are
probably cooked and might have cracked. You could also have some oil
from the valve cover down on that side of the engine.

You need to check the oil for coolant and the coolant for oil.

Depending on how hot it got you could have a failed head gasket. But
that's not terribly likely. I'd check the plugs first.

Either way I'd change the oil immediately. After an overheat the oil
has gotten too hot and will break down.

Sure you didn't get coolant on the side of the block after you
replaced the pump.. and it ran down into #1 and #2 sparkplug divots
just to boil off when the engine got hot.... Been there, done that..


--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!

Did you check the pump to make sure you got the correct one?

Somewhere along the line they switched to a reversed vane pump.


"DougW" > wrote in message
news:JzHng.58194$9c6.29112@dukeread11...
> wodell1 did pass the time by typing:
>> I just replaced the water pump on my 93 Cherokee (4.0 inline six) and
>> there seems to be a bigger issue at hand. My wife was driving it when
>> the
>> water pump failed, she said that it ran hot but there was no noticeable
>> smoke. Now with the new water pump on the vehicle, there is smoke coming
>> from the engine block (where the spark plugs insert) and the engine is
>> still running hot. Any ideas to my problem?
>
> I'd start by pulling out and replacing all the spark plugs. They are
> probably cooked and might have cracked. You could also have some oil
> from the valve cover down on that side of the engine.
>
> You need to check the oil for coolant and the coolant for oil.
>
> Depending on how hot it got you could have a failed head gasket. But
> that's not terribly likely. I'd check the plugs first.
>
> Either way I'd change the oil immediately. After an overheat the oil
> has gotten too hot and will break down.
>
> Sure you didn't get coolant on the side of the block after you
> replaced the pump.. and it ran down into #1 and #2 sparkplug divots
> just to boil off when the engine got hot.... Been there, done that..
>
>
> --
> -- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
> HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
> Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
> Banks Header - and BEER, in the fridge!
>