I have an 85 jeep cj7 that turns over but won't start. Gas is going to the carb.?

Answer 1

Check air filter, fuel pump, fuel filter...and check gas tank for condensation.

Answer 2

Three conditions to be met to run an engine: Air, fuel, spark.

On a carbed jeep it's easy to check them out. Open the Air filter housing. Is the air filter a solid black mass? If yes, that's probably your problem, if no we soldier on.

Look at the carb now. On the top of it you'll see a flatpiece of metal that's partially blocking the opening. This is the choke. Gently open the choke by hand untill it's compleyly vertical. Now look down the throat of the carb and pump the gas (either there at the linkage or with an assistant at the pedal). You should see two squirts of gas shoot into the the carb. If you don't see gas you have a fuel problem (blocked filter, blocked line, bad accelerator pump, dead carb, or out of gas), otherwise you don't have a fuel problem.

Spark: If you don't have any mechanical problems, the only places that would create a no spark condition are: dead module, dead coil, or dead distributor or (if equipped) dead computer (depends on engine and what emmisions package). I didn't say dead sparkplugs because it's impossible that 4 to8 plugs would all die at the same time.

If the problem is mechanical, your timing chain broke. No chain = no cam shaft turning = no distributor turning = no spark. The easiest way to find out is to lift of the distributor cap (Don't unplug anything!) and have somebody crank the jeep. If the rotor is turning while cranking the chain is good, otherwise the chain is broken.

Answer 3

I have an 86 jeep ck 7 getting it to turn over, got it to start once, but it ran for about 3 seconds. Changed the fuel filter, about to go get a new pump. The carb looks ok, but next to the choke levers there is a sensor with wires going in on one side that seems like it could be dead. The reason I say this is because it has no movement. If I push it in it stays and if I push it the other way it stays while trying to start... Could this be an option?

Answer 4

85 Jeep Cj7

Answer 5

Several times a day, someone asks a very similar question to your's.

It's very helpfull to include a little more information in your question to help us, help you, in your times of trouble.

Some of the simple things to include in your question is:

1) Year of car.
2) Make of the car.
3) Model of your car.
Those three things can help us narrow down known issues with particular vehicles that have certain problems that occur on a regular basis. (ie. recalls and such)

Next, If you could give a more detailed explanation of what is happening when you turn the key to start your car.
1) Nothing happens?
2) You hear a "click", but nothing else?
3) You hear the starter turning, but the engine doesn't turn?
4) The starter turns the engine, but the engine won't start up?
5) The engine turns over, but very slowly.
6) the engine turns, but there's an awful banging noise?

Lastly:
What happened last time you drove it?

1) Drove home fine last night, just won't start today?
2) Was driving fine, and it just died on you?
3) You haven't driven it in a while. It's been parked in storage?

I like to say: "The better the question, the better the answer"

Answer 6

Mr Right has good point.
But as a jeep owner/wrencher/fixer lol. If it is a 4.0L there is a good chance that it has a crank position sensor it wont start if its NFG Location: top of bellhousing on drivers side. Wires lead up to harness near carb/throttle body.

Answer 7

if you have fuel going to the carb then you must not have any spark! check your coil! its cheap to change. I want to say about 15 to 20 bones! if you do that I would change my distributor cap and the little rotor inside of it!

Answer 8

mr know is right. pleasegive us more info are the carb jets pumping in fuel when you move accel cable etc. p.s. redtoe.cj7 not a yj or tj

Answer 9

check for spark, could be a crack in distributer, faulty regulator, coil. sounds like a electrical issue though.

Answer 10

Do you have spark and compression?