0
Why is your 99 jeep grand Cherokee engine knocking It stops knocking when I disconnect 6 injector connector.?
Wiki User
∙ 15y ago
"knocking" is very broad so just a wild guess here. I think the reason the knocking stops when you disconnect the number 6 injector is; you are creating a "floating piston". In other words, this piston and cylinder are no longer producing power, they are no longer under a load, and they are no longer compressing the fuel that you have prevented from being injected into the cylinder. So, if you have something wrong with that cylinder, such as a bad piston, piston pin, connecting rod, rod bearing, etc., you have relieved the pressure which will quiet the knock. Again, just a wild guess!
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
How to stop the fuel injector knocking noise on a 1996 Toyota tacoma?
I get knocking & ping noise coming from the fuel injectors
What is the knocking and vibration in the rear of an 2005' Jeep Grand Cherokee?
Normally the exhaust
Why is 1999 Jeep Grand Cherokee 4.7 liter engine valve knocking?
The early 4.7 engine in the grand cherokee,dakotas,and rams have had problems with cylinders on the rear left of the engine,starting with a knocking then overheating and seizing .
What is the best fuel injector cleaner?
Usually, the price will dictate what is the best injector cleaner. "Injector cleaner" is misleading since most "cleaners" you buy do not clean but rather prevent more buildup in the injector tip. An auto shop does have a cleaner though where the fuel system is disabled and the car ran on a bottle for 15 minutes. Knocking and tapping differences are is the question of the century. A tapping noise will come from injectors or the valvetrain in general and is much more subtle than a knocking noise which usually is much louder cam or crankshaft noise indicating failed bearings.
Engine knocks is it map sensor or knock senor?
It may be map sensor but engine knocking cause of another reason. You should check your spark plug , I.S.C valve , Injector and engine Compressor. thanks It may be map sensor but engine knocking cause of another reason. You should check your spark plug , I.S.C valve , Injector and engine Compressor. thanks
What is that knocking noise coming from the engine?
If its gasoline it would be a problem in your head causing the piston to slap against the cylinder walls. If its a diesel engine then the knocking is caused by the .001 to .002 second delay between the fuel injector closing and the compression/combustion of the fuel
How do i stop my engine for knocking?
Try buying a higher grade of fuel first. Some vehicles require more octane to stop them from knocking. You might also consider putting in some injector cleaner with the first upgrade of fuel to see if that helps and cleans out the injectors.
1999 jeep Cherokee and its making a knocking sound deep in the engine and cant figure out what the problem is. what is it and how can you fix it?
If it is deep in the engine, the engine may need repaired/replaced.
Knocking in the bottom of the engine?
knocking noise
What is the knocking noise in a 1995 ram 1500 5.2 V8?
There is no way for me to know what is knocking in your Dodge Ram.There is no way for me to know what is knocking in your Dodge Ram.
Your 1989 Cherokee oil pressure use to go down to zero when you stopped and now it stays at zero what can be done?
Assuming the engine is not knocking, indicating a serious mechanical problem, its most likely the oil pressure sender.
Can a tune up stop knocking?
Sometimes. It depends on what is causing the knocking.
