Question about 1983 Jeep CJ5

3 Answers

Troubleshooting fuel system for 1975 jeep cj5

Why is my 1975 jeep cj5 fuel running very rich even though I replaced the carburetor, fuel pump, wires, spark plugs, cap and rotor? someone told me that aftermarket fuel pumps are defective is that true?

Posted by on

3 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I have a 1974 CJ5 with a 258 I have replaced the carb,pump,plugs,wires,cap,button,coil filter and the jeep will idle fine but when you try to drive it or give it alot of fuel the jeep back fires and its like someone turned the fuel off. what could the problem be.

Posted on Apr 24, 2010

×

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 7 Answers

Very-rich run sounds beyond an adjustment.

Carter YF carb? (1bbl) You don't say which engine/carb, so I am guessing I-6 with a 1bbl. It was most common engine in the mid-70's.

Most commonly a slobbering-rich running YF (we are thinking so slobbering rich it barely idles at all-black exhaust, but will run with throttle open, still rich) is usually a stuck float. The second most common will be a result of a hole in the accelerator pump diaphragm. In either case removing the air cleaner, and looking into carb while engine is running you will see fuel rapidly dripping from venturi. (ok, just in case you forgot, wear safety glasses for that part, don't get too close, a backfire is going to cause a face-flaming !) Some of the cheapo carb kits are not all that compatible with ethanol, and the diaphram will get soft and start to break down in very short order.

If the carb is not assembeled correctly, and the power-valve needle isn't installed correctly it will cause a rich off-idle condition.

Provided the engine is not missfiring, the problem has to be carb related. The only time I can think of ever seeing a fuel pump cause a rich condition it was a result of a performance fuel pump designed to produce 20+ psi overcoming the float valve.

Posted on May 19, 2009

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 475 Answers

Fuel pumps just supply fuel to the carb. Either they work or don't work. I would make sure that the mixture screws on the carb are set properly. Turn the screws in to lean out the mixture, do one at a time.
You want to turn the screws in to the point where the jeep will start to idle rough and then back out a 1/2 turn. Check your timing also. If the jeep has alot of miles on it, the timing chain will stretch and it's possible that you cannot get the correct timing.

Posted on Dec 30, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

'80 jeep cj5 2.5 engine. Cranks and idles fine. Sputters and hesitates during acceleration. Revs smooth while in neutral. New plugs, wires + accel. Pump.


CJ5 Hesitates when accelerating - JeepsUnlimited

www.jeepsunlimited.com/.../showthread.php?...CJ5-Hesitates-when-accel...

Mar 29, 2006 - 19 posts - ‎13 authors
If it still hesitates I'd say it was a carburetor issue (accelerator pump, power valve..). If it is only acting up when accelerating (while driving) that would tell me it ... 1980 CJ5Renegade with 304 v8 .... The idle mixture screws were nearly 3 turns out, I think i have them somewhere around 2.5 turns right now.

97 TJ 2.5L hesitating and sputtering - JeepsUnlimited

www.jeepsunlimited.com/.../showthread.php?...97...hesitating...sputterin...

Dec 8, 2001 - 20 posts - ‎9 authors
Reving the engine in gear with the clutch in a bit would load the ... alot longer to warm up and tends to hesitate when pulling away from a ... Jeep rater score from the factory:26, today:238 ..... 92 XJ 155/80r13s and 17"s of lift.Missing: cj5

Hesitation on Acceleration... performance problems #1 ...

? 7:13
https://www.youtube.com/watch?v=0m4IiVzwjzE
Nov 17, 2013 - Uploaded by Luke Nodzo
Luke will explain why your car may be hesitating or sputtering on... +ameer aklil My 2012 2.5l Frontier does the same thing when it is in 3rd and ...

Dec 16, 2015 | Jeep Cars & Trucks

1 Answer

Cranks but will not start


here are some points to check.fuel tank empty,fault in the fuel injection system,fuel pump faulty,excessive on or to ignition components, worn faulty or incorrect gap on sparkplugs broken loose or disconnected wires at the ignition coil

May 30, 2013 | Jeep CJ5 Cars & Trucks

1 Answer

What is the spark plug firing order for a 1975 DJ5 jeep


1975 Jeep CJ5 4.2L 1BL 6cyl the Firing Order

Firing order 1-5-3-6-2-4 ------------- front ' ' of ' 1 2 3 4 5 6 ' vehicle ' 'Distributor rotates clockwise

Good luck.

Jun 03, 2011 | Jeep CJ Cars & Trucks

1 Answer

My jeep wont idle and stay running must tap gas to keep running it is a cj5 1975 straight 6


Start checking All vacuum lines under hood,on a 75 good chance 1 or more are cracked and leaking!

Mar 08, 2010 | Jeep CJ5 Cars & Trucks

2 Answers

1983 cj5 original engine. starts fine then quits running after running thirty min. or hour. will not start until cooler


Not much info to go on, but It sounds like the ignition coil. What work or maintence has been done??? How many miles are on the vehicle?

Feb 23, 2010 | 1983 Jeep CJ5

2 Answers

I have a 1979 Jeep CJ5 6 cyl. The Jeep starts and


With the engine off, Look down into the carburetor and move the throttle. If you don't see a healthy squirt of fuel. the accelerator pump has failed. The carb may also have deposits in the fuel passageways and may need an overhaul including a good soak in carb cleaning solution.

Aug 10, 2009 | 1983 Jeep CJ5

1 Answer

1977 Jeep CJ5; Fuel issue. Can't get it pumped to


You can attach a siphon to the fuel line from the pump back to the tank and use it to detect any leaks in the line. You can also check the carb the same way, running it on fuel from siphon. If both check out OK, you can use an electric pump or replace the mechanical pump. Either should work providing that the "sock" inside the tank is not obstructed.

Jun 18, 2009 | Jeep CJ5 Cars & Trucks

Not finding what you are looking for?
Cars & Trucks Logo

2,157 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

69199 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22026 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6817 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...