Warming up engine

T

tom geiger

New member
Dec 31, 2006
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Ever since I did the crossover block off my motorhome takes forever to warm up when its cold. It has a electric choke on it but it takes a long warm
up before it can move without stalling. Any ideas on how to help this?

Tom
76 Eleganza 2
455
 
Set the choke a bit richer. Some of the choke thermostatic housings are
marked summer/winter. This should help some.
Jim Hupy

> Ever since I did the crossover block off my motorhome takes forever to
> warm up when its cold. It has a electric choke on it but it takes a long
> warm
> up before it can move without stalling. Any ideas on how to help this?
>
> Tom
> 76 Eleganza 2
> 455
>
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>
 
The one we all preferred was the NAPA Echlin 21603, also called the
CRB21603 or 2-1603. NAPA still has electric chokes in that series, but not
that one. It is no longer made or available.

I did find something that might work on eBay, targeted to a Pontiac
Quadrajet application.

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F332276171588

And one for Chevy applications:

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F142991627091

NAPA might also have those under one of those other part numbers.

These might work by removing the Bakelite can from the metal frame and
installing it in place of the thermostat on the carb. The cube with the
copper eyelet tab goes under an intake bolt to read temperature. The can is
turned with the screws loose to adjust it—turn to just achieve full choke
on a cold engine and then snug up the screw clamps.

The cheaper electric chokes without the sensor are suboptimal. They will
choke the engine for a while, but they’ll also choke a warm engine when
they don’t need to.

Rick “wishing he bought a spare back when they were made” Denney

> There is an electric choke with a thermostat sensor. The normal
> electric choke works fine in normal situation. But when reallt cold it
> opens too
> soon.
>
> I will have to find the part later. But it has been posted in the past.
>
>
> --
> Jon Roche
> 75 palm beach
> St. Cloud, MN
> http://lqqkatjon.blogspot.com/
>
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--
Rick Denney
73 x-Glacier 230 "Jaws"
Off-list email to rick at rickdenney dot com
 
On my 455, with the crossover intact, I recently installed the CU1121 Electric Choke Conversion Kit $39.95 from mikescarb.com.

It's has powered from the engine generator feed on the center terminal of the isolator.

Set 2 notches lean, it seems about perfect.

I have cold started it in temps from 30F to 75F.

--
Dan Wallace
Detroit Metro
1974 Canyon Lands 260
Headers, 3.55, 16"
Floor plan 26-9
 
Ok, took a look at my electric choke, did not see any specific adjustment for winter and summer on it. Do not know about these electric chokes and how
to set them. I see little tick marks much like the timing marks on the balancer. The are cast into the metal canister. But I don't see any adjustment
tick marks on the cap end cover. So not sure how these get adjusted. I guess I'll try to search the net on how the sdjustment works, maybe I have a
less expensive unit on there?
 
Where did you pull the power for the choke

> Ok, took a look at my electric choke, did not see any specific adjustment
> for winter and summer on it. Do not know about these electric chokes and how
> to set them. I see little tick marks much like the timing marks on the
> balancer. The are cast into the metal canister. But I don't see any
> adjustment
> tick marks on the cap end cover. So not sure how these get adjusted. I
> guess I'll try to search the net on how the sdjustment works, maybe I have a
> less expensive unit on there?
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
O.K. Do this in order that I write them.
Cold Engine. (Overnight cold). Remove air cleaner. Observe choke plate. It
should be somewhat open. Pull the throttle back a bit and watch the choke
plate. IT SHOULD CLOSE., but not tightly. Touch the choke plate LIGHTLY
with one finger. You should feel slight tension against the finger
pressure.
Now loosen the three screws that hold the choke housing but do not
remove them. You should be able to rotate the choke housing. Watch the
choke plate as you turn the housing and stop turning the housing when the
choke plate just touches closed. Then, touch the choke plate lightly. It
should open and the spring should close it.
Now turn on the ignition, but do not try to start the engine. Watch
the choke, it should very slowly open if it is wired wrong. If it is wired
from the center post of the isolator, it will not receive voltage except
when the alternator produces current.
Start the engine. Do not pump the gas. It should start right up if
things are right. If not, let us know.
Jim Hupy
Salem, Or

> Ok, took a look at my electric choke, did not see any specific adjustment
> for winter and summer on it. Do not know about these electric chokes and how
> to set them. I see little tick marks much like the timing marks on the
> balancer. The are cast into the metal canister. But I don't see any
> adjustment
> tick marks on the cap end cover. So not sure how these get adjusted. I
> guess I'll try to search the net on how the sdjustment works, maybe I have a
> less expensive unit on there?
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
 
With the E choke do you loose the vacuum pull off function or retain that? Over the years I have found that vacuum pulloff setting and function is
most important for smooth transition using stock bimetallic choke
--
John Lebetski
Woodstock, IL
77 Eleganza II
 
Ok, the electric choke was put in by my local mech, not working with them anymore. Looking at the carb with cleaner off I see the choke plate that is
wide open. It does not look like it moves from its vertical position. Looking cliser on its linkage it looks like the armortures are not installed
correctly. It looks like they are jambed so that the choke flap is stuck in the wide open position. I've tried to take a picture of it but don't know
how to upload it to this site?
 
There's your problem. On the choke side of the carb, there is a
counterweight that gets a bit sticky. A spray of carb cleaner, followed by
compressed air, followed by a bit of your favorite spray lube should free
up the linkage. If not, exercise it by hand until it is free to move. This
should free up the choke plate.
Jim Hupy
Salem, Or

> Ok, the electric choke was put in by my local mech, not working with them
> anymore. Looking at the carb with cleaner off I see the choke plate that is
> wide open. It does not look like it moves from its vertical position.
> Looking cliser on its linkage it looks like the armortures are not installed
> correctly. It looks like they are jambed so that the choke flap is stuck
> in the wide open position. I've tried to take a picture of it but don't know
> how to upload it to this site?
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
 
Some carbs have them, and many have been tampered with over the years and
no longer function or are present. Nice to have them working. It makes
setting the choke easier.
Jim Hupy

On Sun, Nov 11, 2018, 1:41 PM John R. Lebetski
wrote:

> With the E choke do you loose the vacuum pull off function or retain
> that? Over the years I have found that vacuum pulloff setting and function
> is
> most important for smooth transition using stock bimetallic choke
> --
> John Lebetski
> Woodstock, IL
> 77 Eleganza II
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
 
Ok, shazam! Adjusted the electric choke, started up the engine and it pulled out and drove without stalling and very little warm up. Thanks guys,
worked perfectly!
 
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