Degreased and sprayed engine out, now rough idle.

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

drokmofo

Full Access Members
Joined
Jul 20, 2014
Posts
158
Reaction score
23
Location
southern az
Well, as the title says. My oil filter adapter gasket was leaking, as well as the driver side breather tube being not fully connected on the valve cover. So I connected the breather tube and sprayed degreaser so I could clean and find the leak. Sprayed degreaser off w water hose. Replaced the OFA gasket..no leak. But now on idle stopped in drive the SUV shakes badly. Runs as tho it needs new plugs. But I can hear a ticking noise near the backside top of the engine around the rear of the intake. I am figuring that I either got the cops too wet or water in a spark plug cylinder(s). I recently replaced all spark plugs w the sp546. More recently replaced the radiator. Truck was running great until I sprayed out the engine compartment. I am not the most confident w electrical issues, but enjoy fixing things myself. Any help/advise will be greatly appreciated.
 

Trainmaster

Old School Member
Joined
Jun 17, 2017
Posts
3,392
Reaction score
1,919
Location
Rockaway Beach, NY
How long ago did you hose it? It may dry out after a couple of days and be fine. Or you can use a scanner to find which cylinders are misfiring and go after the wet ones.
 
OP
OP
drokmofo

drokmofo

Full Access Members
Joined
Jul 20, 2014
Posts
158
Reaction score
23
Location
southern az
Sprayed out Friday am. It rained that night and most of Saturday. Dry yesterday and today but more rain expected this PM. I am checking for any moisture in plug cylinders now. Drivers side front 3 dry so far. Thx for offering advice
 

JExpedition07

That One Member
Supporting Member
Joined
Mar 30, 2017
Posts
6,509
Reaction score
3,119
Location
New York
I did the same thing as you and had the same problem, when I hosed the engine down it killed a coil. Didn’t misfire until the next day but it came on hard suddenly and found the water wrecked coil on cylinder #8.
 
OP
OP
drokmofo

drokmofo

Full Access Members
Joined
Jul 20, 2014
Posts
158
Reaction score
23
Location
southern az
All plug cylinders dry...Is there an easy way to test the coil packs? Thx
 

JExpedition07

That One Member
Supporting Member
Joined
Mar 30, 2017
Posts
6,509
Reaction score
3,119
Location
New York
All plug cylinders dry...Is there an easy way to test the coil packs? Thx

Mine were dry too, moisture got inside the COP when you hosed it down plus it’s been raining, so the bad one is showing itself. Do you have a check engine light? I’d hook up OBDII and see what cylinder is misfiring. If you drive it a bit and it’s shaking like that it won’t be long.
 
OP
OP
drokmofo

drokmofo

Full Access Members
Joined
Jul 20, 2014
Posts
158
Reaction score
23
Location
southern az
Yes, I have a p0357. Going to move the cop to see if the misfire follows. Thx JExp
 

Adieu

Full Access Members
Joined
Dec 22, 2016
Posts
3,700
Reaction score
786
Location
SoCal
Well, as the title says. My oil filter adapter gasket was leaking, as well as the driver side breather tube being not fully connected on the valve cover. So I connected the breather tube and sprayed degreaser so I could clean and find the leak. Sprayed degreaser off w water hose. Replaced the OFA gasket..no leak. But now on idle stopped in drive the SUV shakes badly. Runs as tho it needs new plugs. But I can hear a ticking noise near the backside top of the engine around the rear of the intake. I am figuring that I either got the cops too wet or water in a spark plug cylinder(s). I recently replaced all spark plugs w the sp546. More recently replaced the radiator. Truck was running great until I sprayed out the engine compartment. I am not the most confident w electrical issues, but enjoy fixing things myself. Any help/advise will be greatly appreciated.

You got water in a plug well and predictably killed a COP

Now you have a misfire

I *did* read somewhere about dipping them in vinegar and baking soda or some such crap, but if you cant fix it you need to replace it
 
Top