86 Grand Wagoner hard to start when it’s cold - JeepForum.com
 
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post #1 of 9 Old 02-24-2021, 10:30 AM Thread Starter
bwheeless
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86 Grand Wagoner hard to start when it’s cold

I have a 8 cylinder 4 barrel carb on my Grand Wagoner. I acts like it doesn’t have gas in the carb when I try to start it cold. Replaced the filter, fuel pump and carb. Acts the same. Once it starts it runs great and will start fine for the rest of the day. Anyone knows what I need to be looking at?

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post #2 of 9 Old 02-26-2021, 02:17 AM
Sir Chomps
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Quote:
Originally Posted by bwheeless View Post
I have a 8 cylinder 4 barrel carb on my Grand Wagoner. I acts like it doesn’t have gas in the carb when I try to start it cold. Replaced the filter, fuel pump and carb. Acts the same. Once it starts it runs great and will start fine for the rest of the day. Anyone knows what I need to be looking at?
I'm not familiar with the four barrel carb. Mine has the two barrel. But there are a few basics for both.
Have you checked the choke set up? It should be fully closed when cold. Make sure you have power going to choke when key is in on position.
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post #3 of 9 Old 02-26-2021, 06:10 PM Thread Starter
bwheeless
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The choke seems to be closed.
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post #4 of 9 Old 02-26-2021, 06:11 PM Thread Starter
bwheeless
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Thanks for the response. I will check the power. I haven’t done that.
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post #5 of 9 Old 03-30-2021, 05:43 PM Thread Starter
bwheeless
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I finally had some time to work on my Wagoner. I did check the power and I do not have any. Looks like the power comes from the oil pressure switch and I only have power on one side, not the side that goes to the choke. The oil pressure switch has two prongs. Could the switch be bad?
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post #6 of 9 Old 04-01-2021, 08:15 PM
BagusJeep
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The choke switch engages when the engine starts and there is oil pressure. If it does not engage with the engine on, it is bad. You could try bypassing the switch, it only really effects you if you are cranking for a long time as the choke comes off whilst cranking.

There should also be a vacuum pull off that pulls it once the engine is running.

Find the manual for your carb and set up as per the manual.

BagusJeep lives in Bali with far too many 4x4s:
1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys
1951 Willys CJ3A/MB/M38 - Little Willy
1995 Cherokee 4.0 - CHEROKEE
1980 Land Rover Series III 109" troop carrier - ROVER
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post #7 of 9 Old 04-07-2021, 06:59 AM Thread Starter
bwheeless
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I replaced the oil switch and I am getting power to the choke. It did not change anything. Still takes a long time to start when it’s cold. Anything else it might be?
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post #8 of 9 Old 04-10-2021, 09:43 PM
CSP
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Is the choke closing?

Are you giving the accelerator pedal one pump to the floor before you try to start it? This is how the choke is activated. It's not like an injected vehicle where you don't touch the gas pedal when trying to start.
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post #9 of 9 Old 04-13-2021, 05:37 AM Thread Starter
bwheeless
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That was part of the problem. The switch was bad but I was pumping the gas when I was turning the key. It works when I push down once or twice. Thanks for all the help.
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