sputtering in the rain 91 camry

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Old 27 Oct 2003, 07:44 am   #1 (permalink)
ED EDIT68
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Default sputtering in the rain 91 camry

Hey all,

Recently I've experienced sputtering at xleration when it rains. It doesn't
happen right when I start the car but a few minutes after driving on the wet
roads and in the rain. I just recently changed the dist. cap and wires and
battery. I think the spark plugs are fine, changed air filter to. I know my
belts are old, could a wet old belt be the problem or is this most likely a
distributor getting wet somehow? Could older spark plugs not fire properly in
moist weather also, just wondering. Thanks for any help



Ed
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Old 27 Oct 2003, 08:12 am   #2 (permalink)
mark Ransley
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Default Re: sputtering in the rain 91 camry

is your distributor cap on tight, see if it wiggles, could be the coil
under the cap, is there a gasket on the cap.

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Old 27 Oct 2003, 11:50 am   #3 (permalink)
ED EDIT68
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Default Re: sputtering in the rain 91 camry

It seems tight, but there is no gasket under the cap nor silicone. I will
check it though. THanks
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Old 27 Oct 2003, 01:52 pm   #4 (permalink)
mark Ransley
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Default Re: sputtering in the rain 91 camry

Did you replace it, or did you pay someone. A new gasket is always used.

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Old 29 Oct 2003, 10:05 am   #5 (permalink)
ED EDIT68
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Default Re: sputtering in the rain 91 camry

I replacedthe distributor cap myself and there was no gasket in the kit. I
will put on the silicone this time and make sure the cap is very tight and
hopefully that will solve my problem.
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Old 29 Oct 2003, 10:36 am   #6 (permalink)
mark Ransley
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Default Re: sputtering in the rain 91 camry

silicone isnt to good an idea, you will never get it off. go back to
the store tell them a gasket wasnt in the box

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Old 29 Oct 2003, 10:53 am   #7 (permalink)
Luc Kumps
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Default Re: sputtering in the rain 91 camry

ED EDIT68 wrote:
> Hey all,
>
> Recently I've experienced sputtering at xleration when it rains. It
> doesn't happen right when I start the car but a few minutes after
> driving on the wet roads and in the rain. I just recently changed
> the dist. cap and wires and battery. I think the spark plugs are
> fine, changed air filter to. I know my belts are old, could a wet
> old belt be the problem or is this most likely a distributor getting
> wet somehow? Could older spark plugs not fire properly in moist
> weather also, just wondering. Thanks for any help
>
>
>
> Ed


Here's a copy of the message, posted by 'Fred' on August 18 in this
newsgroup. Maybe it applies to your car?

Luc K

Here's a classic problem with older camrys. The car starts fine and may
run okay for a few minutes. But then as it starts to warm up, it begins
hesitating on acceleration and/or stalling at stoplights. When it is fully
warmed up the behavior goes away. The problem is usually worse after a
rain or in humid weather. Once it starts happening, it gets more severe
over a matter of weeks.

This one baffles mechanics, who wind up replacing a series of expensive
parts, all to no avail. Ironically, the true fix is very easy and cheap.

'90 Camrys (as well as several years before and several years after-I'm not
sure of the exact range of years) have the coil inside the distributor-a
bad idea. I don't know when they stopped doing that. When the engine
starts, it exudes moisture (a product of combustion). The moisture
condenses on all surfaces inside the distributor. That's okay when the car
is newish, because distilled water is not conductive. But when the car is
older it has a fine film of debri coating all surfaces. When those
surfaces get wet they conduct electricity and the primary coil shorts out.
Then when the car fully warms up, the sufaces are dry again.

The fix is to use isopropyl alcohol (rubbing alcohol) and cotton balls or
Q-tips to clean all the surfaces inside the distributor. Take off the
distributor cap and the black plastic shroud that covers the coil (snaps
off and snaps back on). Clean everything with liberal amounts of alcohol.
Don't worry if it drips all over-it drys without harm. Don't be
discouraged if you don't see a lot of dirt on the cotton, were' talking
trace amounts here. Give special attention to the coil wires. Also clean
the inside and outside of the distributor cap while you're at it. You'll
be amazed. You'll have to do this every couple of years now.

--
Fred


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Old 29 Oct 2003, 11:49 am   #8 (permalink)
Philip
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Default Re: sputtering in the rain 91 camry

In news:QfSnb.113637$8N4.5275758@phobos.telenet-ops.be,
Luc Kumps <NOkumpsSPAM@pandora.be> being of bellicose mind posted:
> ED EDIT68 wrote:
> > Hey all,
> >
> > Recently I've experienced sputtering at xleration when it rains.
> > It doesn't happen right when I start the car but a few minutes
> > after driving on the wet roads and in the rain. I just recently
> > changed the dist. cap and wires and battery. I think the spark
> > plugs are fine, changed air filter to. I know my belts are old,
> > could a wet old belt be the problem or is this most likely a
> > distributor getting wet somehow? Could older spark plugs not
> > fire properly in moist weather also, just wondering. Thanks for
> > any help
> >
> >
> >
> > Ed

>
> Here's a copy of the message, posted by 'Fred' on August 18 in this
> newsgroup. Maybe it applies to your car?
>
> Luc K
>
> "Here's a classic problem with older camrys. The car starts fine
> and may run okay for a few minutes. But then as it starts to warm
> up, it begins hesitating on acceleration and/or stalling at
> stoplights. When it is fully warmed up the behavior goes away.
> The problem is usually worse after a rain or in humid weather.
> Once it starts happening, it gets more severe over a matter of
> weeks.
>
> '90 Camrys (as well as several years before and several years
> after-I'm not sure of the exact range of years) have the coil
> inside the distributor-a bad idea.


Putting the coil inside the distributor is a good idea. Eliminates a
coil wire, shields coil from water, and is one less component to
assemble under the hood when the car is built.

> When the engine starts, it exudes moisture (a product
> of combustion). The moisture condenses on all surfaces inside the
> distributor. That's okay when the car is newish, because
> distilled water is not conductive.


An engine does not "exude moisture" into the distributor housing.
Good grief. So how did -distilled- get inside the distributor?
Unbelieveable.

> But when the car is older it
> has a fine film of debri coating all surfaces.


Debris? From where? The caps have an O-ring around the base of the
cap and some have a vent with baffles to vent ozone.

>When those
> surfaces get wet they conduct electricity and the primary coil
> shorts out.


Why would the surfaces inside the cap get wet? Who determined the
primary coil windings are the ones that get "shorted?" The coil is a
"potted" unit .... pretty much impervious to outside conditions. The
secondary (high voltage) delivery terminal is exposed, quite
obviously to the rotor. Moisture on the outside of the coil will
conduct electricity from the secondary terminal to ground.

>Then when the car fully warms up, the sufaces are dry
> again.


Where did the moisture go?

> The fix is to use isopropyl alcohol (rubbing alcohol) and cotton
> balls or Q-tips to clean all the surfaces inside the distributor.


This is odd. Isopropyl alcohol is 30% WATER.

> Take off the distributor cap and the black plastic shroud that
> covers the coil (snaps off and snaps back on). Clean everything
> with liberal amounts of alcohol. Don't worry if it drips all
> over-it drys without harm. Don't be discouraged if you don't see
> a lot of dirt on the cotton, were' talking trace amounts here.
> Give special attention to the coil wires. Also clean the inside
> and outside of the distributor cap while you're at it. You'll be
> amazed. You'll have to do this every couple of years now.


It would be more to the point to ensure the sealing ring between the
cap and the distributor housing is sealing and that the cap is not
warped (allowing humidity past even a good O-ring). Isopropyl
alcohol is not the optimum moisture removal agent. Visit an
electronics store for residue and water free "contact cleaner."

--

~~Philip "Never let school interfere
with your education - Mark Twain"




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Old 29 Oct 2003, 11:49 am   #9 (permalink)
Philip
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Default Re: sputtering in the rain 91 camry

In news:27587-3F9FECAA-42@storefull-2178.public.lawson.webtv.net,
mark Ransley <ransley@webtv.net> being of bellicose mind posted:
> silicone isnt to good an idea, you will never get it off. go back
> to the store tell them a gasket wasnt in the box


I've used silicone DIELECTRIC grease between the cap and the
distributor housing (years ago) and around the primary wire where it
entered the housing on slant six mopars. Those engines had the
distributor in the WORST place imaginable with respect to getting
wet. I did try silicone sealer on the cap once .... needed a small
slide hammer with a hook to get the cap off the following spring.
But no more drowned distributors!
--

~~Philip "Never let school interfere
with your education - Mark Twain"




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