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I have a 1998 jeep grand cherokee that has a cylender 2

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I have a 1998...

I have a 1998 jeep grand cherokee that has a cylender 2 misfire after i changed engines. I changed all electrical parts. But when i pull injectors 1 at a time they make a big differance except cylender 1 and 5 have no change

Mechanic's Assistant: How many miles are on the car? Is it a steady misfire? Or random?

Just replaced the motor with a low milage jasper 4.0. N its seems steady but sometimes clears up when resetting ecu

Mechanic's Assistant: Are you fixing your Grand Cherokee yourself? What have you tried so far?

Yes myself. Ive put new plugs wires rotor button and cap. Swapped injectors around n tryed differant coil off old motor and all sencors from old motor

Submitted: 4 months ago.Category: Jeep
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Answered in 2 hours by:
3/11/2018
Jeep Mechanic: Dan, Technician replied 4 months ago
Dan
Dan, Technician
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Satisfied Customers: 25,969
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Hello, my name is ***** ***** I'm here to help get your problem solved.

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Jeep Mechanic: Dan, Technician replied 4 months ago

Have you done a compression test?

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Customer reply replied 4 months ago
No i tryed but tester woulnt fut in all the way. Got 110 lbs of compresion but it was leaking some. So has to have more than that.
Jeep Mechanic: Dan, Technician replied 4 months ago

It sounds like problem is most likely engine mechanical considering what has been done so I'd recommend getting a compression tester that fits properly and testing compression of all cylinders. Let me know what readings are when you get a chance. Thanks.

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Customer reply replied 4 months ago
Ok dont have money for a tester or to pay so ill see what i can do. It is a newer jasper engine shouldnt have any internal damige i wouldnt think
Customer reply replied 4 months ago
Almost forgot. The distributer had a broken tooth and some wear so could this be anything related to mi issue? If not what causes the distibuter teeth to break
Jeep Mechanic: Dan, Technician replied 4 months ago

Did you replace the distributor?

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Customer reply replied 4 months ago
I put the one from my old motor in it. It didnt have any sigh of wear at all. N old motor ran great untill rod bearing went
Customer reply replied 4 months ago
When i changed it it ran good for about 5 miles or so than acted up again
Jeep Mechanic: Dan, Technician replied 4 months ago

Have you checked ignition timing?

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Customer reply replied 4 months ago
No. I do have a timing light tho. The motor is suposse to be about brand new and looks it. Said dealer put it in n they wrecked the jeep which i did see totaled there.
Jeep Mechanic: Dan, Technician replied 4 months ago

C​heck ignition timing and let me know how it goes. The fact it ran good for 5 miles after installing distributor tells me engine internals should be ok.

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Customer reply replied 4 months ago
Ok thanks
Jeep Mechanic: Dan, Technician replied 4 months ago

No problem, keep me updated. Thanks.

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Customer reply replied 4 months ago
Ok not home now but will get back to you later today on that timing
Jeep Mechanic: Dan, Technician replied 4 months ago

Sounds good, thanks.

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Customer reply replied 4 months ago
How do i check the timing when there r no timing marks. Unless i take the motor apart n look at the gears idk how to check it with light.
Customer reply replied 4 months ago
Will looking at it with my code scanner tool do any good
Customer reply replied 4 months ago
The timing is right. There only one way to set it. By the distributer n its in time by that
Jeep Mechanic: Daniel, Manager replied 4 months ago
Daniel
Daniel, Manager
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Hi, this is Daniel and I will be assisting you today. Please note that all experts are paid based off of ratings alone and I prefer five stars so please let me know if there's any way that I can achieve that from you today.

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Jeep Mechanic: Daniel, Manager replied 4 months ago

Based on what I am reading here, I am recommending that we continue this conversation via phone call assistance so that I may assist you more efficiently. Please except my request so that I can continue or we can continue through this message board but it may take longer depending on the difficulty of your problem.

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Jeep Mechanic: Daniel, Manager replied 4 months ago

Once you have accepted the proposal and I will post my phone number, at that point you will text me at least 30 minutes prior to when you are ready to talk. At that point I will call you or set up a time to do so as soon as possible.

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