Good Sam Club Open Roads Forum: Engine miss in hard rain
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 > Engine miss in hard rain

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dcbrewer

kentucky

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Posted: 04/12/21 09:03am Link  |  Quote  |  Print  |  Notify Moderator

rgatijnet1 wrote:

This is a simple solution on the GM 8.1L engine. What is happening is that your "tuba" air intake is ingesting water which is soaking your paper air cleaner element and causing the engine to miss.
The solution is to cut off the top of the air intake tuba, turn it 180 degrees, so that it faces the rear, and using duct tape, reattach the intake air horn. I used two pieces of aluminum to screw in to the bottom of the tuba and then screwed the top on before I taped the joint. My cost was really nothing more than some time. I put another 50,000 miles in some very hard rain the the problem was solved.
[image]


I will make that change to. Thanks!!

dcbrewer

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Posted: 04/12/21 09:04am Link  |  Quote  |  Print  |  Notify Moderator

ArchHoagland wrote:

Is it the 8.1 engine?


It is the 8.1

dodge guy

Bartlett IL

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Posted: 04/12/21 09:25am Link  |  Quote  |  Print  |  Notify Moderator

dcbrewer wrote:

dodge guy wrote:

Yes that will cause a miss. I would change out all the plugs and wires being an 06.


I have changed to the ultra rv wires and new plugs, thats when i found the crack in the insulator.


Sorry, I forgot about you said you replaced them between reading and posting. yes Im sure that was the cause of your miss. even more so when its damp outside.


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ArchHoagland

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Posted: 04/12/21 12:09pm Link  |  Quote  |  Print  |  Notify Moderator

Have you been getting any Check Engine Lights?


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Bumpyroad

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Posted: 04/12/21 02:18pm Link  |  Quote  |  Print  |  Notify Moderator

this also was a problem with the Ford chassis, 99ish. they had a snorkel that was available to fix it.
bumpy





dcbrewer

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Posted: 04/12/21 04:37pm Link  |  Quote  |  Print  |  Notify Moderator

ArchHoagland wrote:

Have you been getting any Check Engine Lights?


The light will come on, but will go off when i get out of the rain for a few miles

4x4van

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Posted: 04/12/21 05:46pm Link  |  Quote  |  Print  |  Notify Moderator

The tuba fix is only applicable on certain models. It really depends on the configuration of the hood. Some RV's have a hood that positions the tuba directly behind a joint between the hood and the rest of the bodywork. That allows rainwater to enter through the small gap and go into the intake while driving in heavy rain. Some have solved the issue by adding weather stripping around the hood opening, particularly in the area where the tuba is, without having to cut/turn the tuba.


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Bird Freak

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Posted: 04/12/21 06:24pm Link  |  Quote  |  Print  |  Notify Moderator

My 04 Pace Arrow never had the water problems but it loved plug wires. Being a hot rod builder I put Taylor high heat wires on it from Summit Racing and never had a miss after that.


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dcbrewer

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Posted: 04/12/21 07:11pm Link  |  Quote  |  Print  |  Notify Moderator

4x4van wrote:

The tuba fix is only applicable on certain models. It really depends on the configuration of the hood. Some RV's have a hood that positions the tuba directly behind a joint between the hood and the rest of the bodywork. That allows rainwater to enter through the small gap and go into the intake while driving in heavy rain. Some have solved the issue by adding weather stripping around the hood opening, particularly in the area where the tuba is, without having to cut/turn the tuba.


I will take a good look at the way mine is made, thinking rain water could go down between the windshield bottom and the hood, and straight into the tuba. when i wash again, will see how the water runs down. that could be the problem. might need to put a hood over it.

ArchHoagland

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Posted: 04/12/21 09:36pm Link  |  Quote  |  Print  |  Notify Moderator

dcbrewer wrote:

ArchHoagland wrote:

Have you been getting any Check Engine Lights?


The light will come on, but will go off when i get out of the rain for a few miles


You need to find out what the code is for that Check Engine Light.

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