2004 FX4 5.4L....I Washed the Engine...

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Old Oct 1, 2009 | 09:20 PM
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2004 FX4 5.4L....I Washed the Engine...

About a week ago I did a quick soap and rinse on the engine bay.
Haven't noticed any changes, but just read about COP problems and washing the engine....I guess it is a big NO-NO.

Truck is at 60K miles, transmission is a bit flaky but overall it runs well.

Do the COP's need to be replaced at 60K ? The dealer wanted me to bring
it in for a few things....I am sure after 5years it needs a brake fluid flush.
Did the tranny fluid and have always done oil at 3K intervals.

Thinking about a programmer (gryphon or edge), only other mod is a K&N airfilter (not CAI).

Thanks....
 
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Old Oct 1, 2009 | 09:44 PM
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Originally Posted by F150FX4
About a week ago I did a quick soap and rinse on the engine bay.
Haven't noticed any changes, but just read about COP problems and washing the engine....I guess it is a big NO-NO.
It is, -I've heard of a few trading their's in after doing that. Just wouldn't run right from that point on.
 
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Old Oct 1, 2009 | 10:08 PM
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yea, idk why people insist on washing their engines! big no no!!!! when i tried to keep my truck clean i would clean it with a wet cloth, no water hoses or anything
 
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Old Oct 1, 2009 | 11:01 PM
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glc
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The cops do not need to be replaced until you start getting misfires with good plugs.

Don't bother doing a brake fluid flush unless you are getting a brake job.

If you are running a K&N, you should probably clean the MAF periodically.
 
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Old Oct 2, 2009 | 10:40 AM
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Washing the engine is fine as long as you do it with common sense using low pressure spray, & keeping water away from the cops! I have never had a problem & probably wash my engine several times a year, or at least once every season.....
 
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Old Oct 2, 2009 | 10:50 AM
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I washed mine w/petrol in 2006 @ about 55 mph and lived thru it. It's been clean ever since.

I did loose #8 on that one tho. It came back for a few , then went back out again.

Never will forget that day, - takin my kid to school, fuel line connector broke. Tied it back together w/boot laces/ limped her back home.
 

Last edited by jbrew; Oct 2, 2009 at 11:06 AM.
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Old Oct 2, 2009 | 10:54 AM
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I wash mine once a year and still have stock COPs, plugs and alternator. These are all the things people say not to get wet. 137K and still running great.
 
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Old Oct 2, 2009 | 01:54 PM
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I was careful of the electronics, used a mild soap and light spray. Brushed a few parts while they were soapy. I will be cautious in the future.

Thanks !
 
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Old Oct 2, 2009 | 02:12 PM
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If you're careful, you MIGHT be ok, but even after the dealer suggested doing a light spray down to keep the dust off, I'm not doing it anymore. Just about every time I did it, even with being careful, the engine ran rough for a day or 2. Never fried any COP's but always ran rough after doing. If you decide to do it, make sure to run the engine right after you finish for probably 15+ minutes or better yet take it for a drive. I found a leaf blower works just as good to knock the dust off everything. Once you cause a problem and spend hours and days trying to find it, you'll think twice about taking a hose to your engine again... there are more sensors and electronic devices under your hood than you probably realize.
 
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Old Oct 2, 2009 | 05:07 PM
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Holy crap, I cant believe I have never realized its a no no. I have been doing it since I bought it over 3 years ago. I better knock on wood. No problems yet and engine is as clean as new. Infact I have done it to every vehicle I have owned over the last 15+ years and never one time had one stumble or hesitate to start. I should consider myself lucky.
 
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Old Oct 2, 2009 | 05:37 PM
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Well, what it boils down to, - your taking a chance hosing her down. Would you hose down your computer case ? Well maybe that's not a fair comparison, - yet! Stay away from the plug chambers for sure lol.
 
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Old Oct 2, 2009 | 06:43 PM
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Well I am torn, the horror stories here with COPs, but my holes are currently filled with mud. Not a good choice to make but I did hose them out as much as possible but will need some serious cleaning when I go to change the plugs the next time.
 
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Old Oct 3, 2009 | 04:12 AM
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Washing the engine

I have owned 3 modulars and wash with a pressure washer and have never had any problem as a result. I cover the important things with plastic and pull the COPs and blow the plug holes and COP's good and dry after and have yet to have any trouble. I think the problem some people have is running it like you used to do right afterwards to dry it. If water has gotten past COP boots, it turns to steam around the plugs and boots and that does not bode well. I generally do my drying with compressed air. A little common sense goes a long ways.
 
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