I washed my engine, now it stumbles and sputters? - Mustang Evolution

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Old 09-10-2012, 03:18 PM   #1
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I washed my engine, now it stumbles and sputters?

Went to the car wash and Sprayed down the engine with engine cleaner on low pressure let it soak while washing the rest of the car, then rinsed the engine on low pressure. Leaving the wash the car stumbled and sputtered, I took it down
the interstate a ways and it seemed to clear up. Next morning I drive to O'Reilly's and it seem'd fine. Gassed up on the way home and parked the car. Go to take it for a ride yesterday afternoon and it is missing, sputtering and just running like ****.

Got the car home disconnected and sprayed every connecter I could find with WD40, pulled the cover off the fusebox and sprayed it down. Pulled the cap and well you get it. The terminals on the cap were corroded so I cleaned them up with some emery cloth.
I also checked all connections for proper voltage and everything was right at 11.90v. I did notice the Positive cable on the alternator was slightly loose so I tightened that up ran the car for a little while (still ran crappy) retested voltages and the were just over 12v.

Anymore Ideas????

I am going to change the cap and rotor today, any specific brand suggestions?
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Old 09-10-2012, 06:25 PM   #2
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Go with an MSD cap and rotor
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Old 09-10-2012, 07:21 PM   #3
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Re: Washed Engine

Quote:
Originally Posted by Jeff44 View Post
Go with an MSD cap and rotor
Yeah I got the cap and rotor (MSD) and no real difference
in the way the car is runnig.

I sprayed all the electrical connections down with WD40 again
but haven't started the car back up since. Going to take it for
a long ride down the interstate and see if it dries it out or
helps any.

Also I did fill up with gas the next morning, ould I have gotten some bad
gasoline...
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Old 09-10-2012, 09:09 PM   #4
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Quote:
Originally Posted by Mike90

Yeah I got the cap and rotor (MSD) and no real difference
in the way the car is runnig.

I sprayed all the electrical connections down with WD40 again
but haven't started the car back up since. Going to take it for
a long ride down the interstate and see if it dries it out or
helps any.

Also I did fill up with gas the next morning, ould I have gotten some bad
gasoline...
Sounds to me line your headed in the right direction. I would try and dry it out as good as possible. And the bad gas theory sounds pretty plausible. I would try some fuel stabilizer and fuel injector cleaner.
At least the msd cap looks sexy.

Good luck man. Let us know if you have any problem.
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Old 09-10-2012, 09:36 PM   #5
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Re: Washed Engine

Rule #1: Do not use a pressure washer, even low pressure to wash the engine, engine bay.

You probably forced some water into a connection and it is shorting out. A long drive may cure it if it does not permanently damage a component.
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Old 09-10-2012, 10:29 PM   #6
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Re: Washed Engine

I drove it for about an hour and still runs the same. I stoped at a gas station
about 1/2 way and thought to check the fuel pressure gauge on the rail, it is reading
19psi with the hose on or off. Picked up a new filter, going to drain the tank and
put the new filter in tomorrow. And reset the Fuel Pressure if needed.
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Old 09-10-2012, 10:35 PM   #7
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Re: Washed Engine

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Originally Posted by Mike90 View Post
I drove it for about an hour and still runs the same. I stoped at a gas station
about 1/2 way and thought to check the fuel pressure gauge on the rail, it is reading
19psi with the hose on or off. Picked up a new filter, going to drain the tank and
put the new filter in tomorrow. And reset the Fuel Pressure if needed.
Then likely the damage is done, whatever it may be.
Sounds like you need a new regulator or fuel pump.
If you do not have an adjustable regulator, there is nothing you can do with the pressure.
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Old 09-11-2012, 11:13 AM   #8
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Re: Washed Engine

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Originally Posted by Trojan Horse View Post
Then likely the damage is done, whatever it may be.
Sounds like you need a new regulator or fuel pump.
If you do not have an adjustable regulator, there is nothing you can do with the pressure.
I have an adjustable regulator, going to change the fuel filter today.
I wonder if there is anyway I can suck any sediment that may be in the
bottom of tank, out.
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Old 09-11-2012, 11:29 AM   #9
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Quote:
Originally Posted by Mike90

I have an adjustable regulator, going to change the fuel filter today.
I wonder if there is anyway I can suck any sediment that may be in the
bottom of tank, out.
Something got wet that shouldn't have fuel or spark how old are your wires?
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Old 09-11-2012, 12:26 PM   #10
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Re: Washed Engine

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I have an adjustable regulator, going to change the fuel filter today.
I wonder if there is anyway I can suck any sediment that may be in the
bottom of tank, out.
I doubt it. There is a "sock" filter on the pump pickup.
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Old 09-11-2012, 03:30 PM   #11
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Re: Washed Engine

Ok I changed the filter the other one looked kind of old but no gunk
or anything came out of it. Also disconnected the fuel feed line at the
rail and the gas coming out was just as clean as when it came out of the
pump.

Was in the process of checking voltages for the fuel system, to try and
figure out why the Fuel psi is at 20psi and won't go above no matter
how I adjust it. Had to take a break before I loose my mind.

I checked the voltage at the fuel pump plug by the tank.
I got 12von one pin and 9v on the other, this was with the
eec plug grounded to fool the pump and keep it running.
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Old 09-11-2012, 09:30 PM   #12
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Re: Washed Engine

Your pump is failing, probably the built in check valve is stuck open and it just can't build anymore pressure.
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Old 09-18-2012, 08:35 PM   #13
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Re: Washed Engine

Yeah the pump is bad, going to change it this weekend..
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Old 09-19-2012, 08:13 AM   #14
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Re: Washed Engine

Glad you found it, good luck with your project.
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Old 09-20-2012, 09:43 PM   #15
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Re: I washed my engine, now it stumbles and sputters?

Yeah I am putting in a Focus SVT pump. Found out the part # E2448 $65.99
to get it from Autozone. It is an Airtex but Walbro manufactures
them, not the usual junk they make.
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Old 09-20-2012, 10:04 PM   #16
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Re: I washed my engine, now it stumbles and sputters?

Quote:
Originally Posted by Mike90 View Post
Yeah I am putting in a Focus SVT pump. Found out the part # E2448 $65.99
to get it from Autozone. It is an Airtex but Walbro manufactures
them, not the usual junk they make.
Does it pump enough LPH to feed a V8?
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Old 09-21-2012, 05:41 AM   #17
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Re: I washed my engine, now it stumbles and sputters?

Quote:
Originally Posted by Trojan Horse View Post
Does it pump enough LPH to feed a V8?
Yeah up to 270lph

Part Number:

E2448



Weight:

0.9 lbs



Warranty:

1 YR



Gaskets Included:

Yes



Inlet Attachement:

Inlet-Strainer



Inlet Count:

1



Item Grade:

OEM Standard



Maximum Free Flow Rate (gph):

75



Maximum Pressure Range (psi):

110



Minimum Free Flow Rate (gph):

55



Minimum Pressure Range (psi):

85



Outlet Attachment:

Outlet-HoseConnect



Outlet Count:

1



Outlet Size:

Outlet - .348
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Old 09-21-2012, 06:18 AM   #18
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Re: I washed my engine, now it stumbles and sputters?

I have always been told: "Absolutely NO water pressure, NO water Hose for Engine cleaning at all". That will always create problems. Use PLENTY towels/rags etc. Get a bucket of soapy, soapy water or cleaner/degreaser, use rag to soap up Engine parts by parts. Then use bucket of clean water and rags, to clean off soap and Engine. many, many rags to get the job done, but no water pressure at all.
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Old 09-21-2012, 08:31 PM   #19
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Re: I washed my engine, now it stumbles and sputters?

Yeah but my issue wasn't a wet engine it is the Fuelpump..
I used no pressure just a light spray...
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Old 01-20-2013, 02:16 PM   #20
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So is it safe to wash an engine with light spray? I have dust everywhere, and rags won't reach in most of the right spaces. Since his problem wasn't the water, would it be risky to wash my engine with a "pressure washer" even though I'm not using any hard pressure? Really would like to know.
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Old 01-20-2013, 02:25 PM   #21
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Quote:
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So is it safe to wash an engine with light spray? I have dust everywhere, and rags won't reach in most of the right spaces. Since his problem wasn't the water, would it be risky to wash my engine with a "pressure washer" even though I'm not using any hard pressure? Really would like to know.
You still need to cover up all the electrical connections, fuse box, as well as the alternator if you do. It will save you a ton of headaches. Let the engine cleaner do the work, not the high pressure spray. When winter is over, I'll be using a pump spray bottle to rinse mine off, rather than high pressure or a garden hose with a spray nozzle. You can maneuver the spray wand into the tight areas better.
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Old 01-20-2013, 02:26 PM   #22
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I personally wouldn't even though you may be alright. The extra elbow grease is well worth the risk of possible major headaches imo.
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Old 01-20-2013, 02:29 PM   #23
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I personally wouldn't even though you may be alright. The extra elbow grease is well worth the risk of possible major headaches imo.
and the times I have done it I did it with the engine cool but running. Never had any issues like that with the cap covered.
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Old 01-20-2013, 02:31 PM   #24
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Quote:
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You still need to cover up all the electrical connections, fuse box, as well as the alternator if you do. It will save you a ton of headaches. Let the engine cleaner do the work, not the high pressure spray. When winter is over, I'll be using a pump spray bottle to rinse mine off, rather than high pressure or a garden hose with a spray nozzle. You can maneuver the spray wand into the tight areas better.
Thanks, will do. +1
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