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-   -   Carwash woes. Beepity boopity (http://legacygt.com/forums/showthread.php?t=182217)

bmx045 03-20-2012 07:13 AM

Carwash woes. Beepity boopity
 
So after the new shortblock installation I find myself with cyl 1 and 3 (pass side cylinders) misfires only when in the touchless carwash(the fast jet spray thingies). It will stumble and misfire for about 5 seconds then completely disappear. I have no other times when I misfire. Another local subaru owner has an identical problem and doesn't know what it is.

I got a bottle of water and dribble drabbled some water in the areas I think are being affected while the engine was running, with the hood up, but found no reoccurence of aforemetnioned issue. Any common areas in the engine bay that this happens in? My fuel trims are fine, vac is fine, no vac leaks found. Air box is sealed fine, coil pack connectors are on (obviously as it runs and drive fine otherwise).

Max Capacity 03-20-2012 07:21 AM

You lazy bum. Wash the damn car by hand.

Oh let me guess, you live in an appartment. Hey use the wand at the car wash and bring your own towels to dry it off.

I would think it could be a humidity problem and a not water tight connection.

Maybe take apart all the connetors, check the seals.

Good Luck

bmx045 03-20-2012 07:25 AM

I dribbled water over the maf and connectors and coil packs in hopes to fry my ecu, didn't stumble. It's weird that the misfires resolve within seconds!

Turkeylord 03-20-2012 07:32 AM

Soap in the intercooler

bmx045 03-20-2012 07:33 AM

I did see some suds, possible culprit duly noted.

Max Capacity 03-20-2012 07:50 AM

Quote:

Originally Posted by bmx045 (Post 3807190)
I dribbled water over the maf and connectors and coil packs in hopes to fry my ecu, didn't stumble. It's weird that the misfires resolve within seconds!

That's close but it's not the same as the hood closed, engine running, high pressure hot water being forced under the car, water vapor rising up.
I guess that's the engineer in me (not that I am one) talking.

Next time it rains make sure you drive the car while it's raining. My old 86 Ford F150 doesn't like rainy day's sometimes too. That's how I know it's time for a new distrubitor cap and rotor.

paintpollz 03-20-2012 07:50 AM

my last truck misfired too after i sucked a gallon of water through the intake. hmmmm

bmx045 03-20-2012 07:51 AM

Hmm, didn't think about the steam factor.... I also no longer have the underneath heatshields on my header. weird. neither does my friend...but he does have an undertray on.

bmx045 03-20-2012 08:00 AM

but at the same time people with aftermarket headers don't have heatshields on them and dont have this issue. maybe i should put some dielectric grease in the coilpack connectors...the steam may be seaping through

BarManBean 03-20-2012 08:02 AM

Why still no undertray?...TMIC + undertray = good.

bmx045 03-20-2012 08:03 AM

I've had bigger things to deal with, like dropping an engine in and out. I'm just past break in and monitoring for leaks, still none. Maybe this weekend i'll get to put it on.

Leviman 03-23-2012 05:32 AM

Where's your intake? If it's a factory snorkel I'd think the carwash is just blasting up the intake causing it to suck a bit of water.

bmx045 03-23-2012 05:50 AM

factory intake setup, i briefly though about the steam being sucked in or whatever, not sure. can steam get past the filter?

Lardo420 03-23-2012 06:12 AM

Quote:

Originally Posted by Turkeylord (Post 3807200)
Soap in the intercooler

this

paintpollz 03-23-2012 07:52 AM

Quote:

Originally Posted by bmx045 (Post 3812114)
factory intake setup, i briefly though about the steam being sucked in or whatever, not sure. can steam get past the filter?

I don't even have trouble with my open cone avo


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