J10 wont start - JeepForum.com

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post #1 of 17 Old 09-24-2011, 06:29 PM Thread Starter
240impala
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J10 wont start

Ok I got 79 jeep j10 4.2l won't start I can put starter fluid in it and it busts off and then runs perfect. I have replaced the filter plugs wires cap rotor fuel lines. Any ideas


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post #2 of 17 Old 09-24-2011, 07:12 PM
pleontks
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fuel pump

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post #3 of 17 Old 09-24-2011, 07:24 PM Thread Starter
240impala
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It's pumping fuel out the filter pretty good but could be weak

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post #4 of 17 Old 09-24-2011, 08:56 PM
Marn
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Carb is dirty/clogged?

Obviously it's getting air in, and its getting fuel to the carb, but something between the fuel inlet on the carb, and the intake is amiss.

Sounds like a carb problemo to me, sir.

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post #5 of 17 Old 09-24-2011, 09:09 PM Thread Starter
240impala
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Quote:
Originally Posted by Dr. Marneaus
Carb is dirty/clogged?

Obviously it's getting air in, and its getting fuel to the carb, but something between the fuel inlet on the carb, and the intake is amiss.

Sounds like a carb problemo to me, sir.
Yeah I have cleaned the line and that needle on the inlet. I just dont get how when it busts off it runs fine no problems.

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post #6 of 17 Old 09-24-2011, 09:26 PM
Marn
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what do you mean busts off?

You can get it started with starting fluid, and it runs fine, but when you try to start it without it, it doesnt work?

Hmm.

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post #7 of 17 Old 09-24-2011, 09:50 PM Thread Starter
240impala
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Quote:
Originally Posted by Dr. Marneaus
what do you mean busts off?

You can get it started with starting fluid, and it runs fine, but when you try to start it without it, it doesnt work?

Hmm.
The motor starts?

Yeah runs great when I spray it idles great can run it forever but cut it off and just turns over till I spray it again

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IRO 6.5" lift, IRO Front long arms, rear iro adj upper a arm and adj rear lower, custom 4x4 fab front bumper, rough country winch, 15" crager soft 8's, procomp 35-12.50 tire, fenders trimmed KOR light bar, malone roof rack
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post #8 of 17 Old 09-25-2011, 01:26 AM
Marn
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Okay, tell me if these situations are correct.

1. Turn the key, it just cranks and cranks. doesnt start.

2. spray starting fluid in the carb, crank, it starts, stop spraying fluid, it keeps running like a normal vehicle. ( the only issue is getting it started, then it runs normal)

Or are you saying that you have to keep spraying starting fluid to keep it running?

If it ONLY runs while you are spraying, then there is an issue somewhere in the carb. Breather holes can be clogged, small lines can be clogged. You'd probably eb looking at a full rebuild, and in doing so I would soak it in carb cleaner or lacquer thinner or something over night, to clean out all the small passages.

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post #9 of 17 Old 09-25-2011, 08:00 PM Thread Starter
240impala
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Ok may know what's wrong does anyone know the type of carb this is 79 4.2 stock carb.

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post #10 of 17 Old 10-28-2011, 12:01 PM
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Sounds like the choke isn't working

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post #11 of 17 Old 10-28-2011, 07:21 PM Thread Starter
240impala
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No it was the float and now the motor is out :/

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post #12 of 17 Old 11-18-2011, 10:27 PM
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Because of the valves? 1 bbl carb or 2 bbl? I have the 2bbl BBD Carter and separated intake/exhaust from my '83 J10's 258 on Ebay right now (shipping sucks due to weight)

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post #13 of 17 Old 11-19-2011, 05:18 AM Thread Starter
240impala
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I don't need a carb the motor is out. I'm rebuilding it and putting a weber or a 4 barrel on there. Do you have any other parts for sale?

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http://www.jeepforum.com/forum/f22/w...there-1153271/

IRO 6.5" lift, IRO Front long arms, rear iro adj upper a arm and adj rear lower, custom 4x4 fab front bumper, rough country winch, 15" crager soft 8's, procomp 35-12.50 tire, fenders trimmed KOR light bar, malone roof rack
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post #14 of 17 Old 11-22-2011, 07:33 PM
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I don't understand why you pulled the motor because the carb was bad?

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post #15 of 17 Old 11-22-2011, 11:31 PM Thread Starter
240impala
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Quote:
Originally Posted by carnuck
I don't understand why you pulled the motor because the carb was bad?
No because a valve was sticking. And when I pulled the head the motor was full of gunk so I pulled and am freshening it up. As well as getting rid of that junk carter carb and putting a weber on there with an hei distributer

"Don't Do It"


http://www.jeepforum.com/forum/f22/w...there-1153271/

IRO 6.5" lift, IRO Front long arms, rear iro adj upper a arm and adj rear lower, custom 4x4 fab front bumper, rough country winch, 15" crager soft 8's, procomp 35-12.50 tire, fenders trimmed KOR light bar, malone roof rack
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