Ok I got a question what is the cause of knocking of the engine? cause I think my motor is knocking on me... I can hear it at idel and I know somthing is wrong with my motor, I want to fix it but I have to know what parts I have to get and stuff so I know how much to spend... can anyone help me on this if not then I guess its time for a new motor ej20t maybe I was thinking about the 25(t) but cost to much, so if anyone got a motor for sale ill take ej22, and 20 (20t?). help this bradur out. thanksamillz.


Ryan(KeN)

 

Mo Info ****!!!

 

damn thats sucks... sorry to hear that man. btw what year is your car? do you know what might have caused this to happen? gl on motor

 

what you mean "more info" im the one asking the question here not answering it heehee... all I know is that when I open up my hood even when its close and also inside my car I can hear some kinda knocking sound now I dont know if I should go to this thursdays meet dammit!, untill I find out whats the cause or what can I do to fix it is when I dont ned to worry about my engine anymore. my car is a 96 impreza lx awd ej2.2l

 

once again I feel generous. "Knocking" in relation to cars refers to pre-ignition, or combustion occuring before it should. This can be caused by poor gas (improper octane), too much timing advance, high compression, lean air/fuel mixture, etc. The fact you hear "knocking" when you open up the hood (engine is idling) tells me you most likely have something vibrating, not "knocking". Can't recall ever hearing a car "knock" at idle. Anything is possible. Have a competent friend or shop listen to this "knocking" before doing anything drastic (replacing the motor). Even if your motor is "knocking" it isn't a reason to replace it, rather you should fix the problem.

San

 

yes thanks man oldmansan... I just hope its nothing bad and eazy fix cause the last thing I want to do is a swap. well I do have a safc and maybe its not program right, does anyone have an apexi safc in there car and know what specs I can use lmk thanks.

 

if your S-AFC is "programmed", who programmed it and why? Is it even installed correctly? You can't expect much help if you don't list all your mods and any SPECIFIC problems you have. Hard to troubleshoot without details.

San

 

I thought that was detonation? If that's knocking, then what's detonation?

 

i know he has a crank pulley tho i dunno if he fixed the timming after he out the lighter crank pulley in. ken look into that

 

Is it knocking or tapping. I've never heard "Knocking" on any car that can actually be driven at idle. If it is just a tapping, then when was your last oil change? It could be just that there is not enough oil hitting your valve train and it causes a tapping from the movement of the valves. I had this happen in another vehicle before. It could also be that the valves need adjusting, and this is only if it is tapping not knocking. But like the others said, you need more info.

 

What does it sound like more knocking or tapping? Tapping most likely your valvetrain. Might need adjustment or could be as simple as oil level. Knocking could be rod knock. Also due to oil. Either low oil pressure or low oil level but either way rod knock is a bad thing. Would require a rebuild of the motor or atleast new rod and maybe crank bearings. Then while the motor is apart the machine shop will have to make sure your crank and rods are within spec/tolerance. If everything is within spec they can put your motor back together with the new bearings and your good to go. Still gonna cost some cash but not as bad as buying another motor.

It all comes down to what that sound really is. On my protege I had rod knock and the cost of new bearings and some machine work to clean up the crank it cost about $450 and thats me taking out the motor and dropping it off at the machine shop. But they did the tear down and reassembly of the block. Just my .02 cents.

Dave

 

Ok all I got on my motor is crank pully and hyper voltage thats it. as for knocking and taping i dont know the difference unless you hear it your self, but it does sound like it.

 

Same thing. "Knocking" is "old school".

San

 

Hay guys thanks for trying to help me out at the meet sorry you couldnt hear the sound I was talking about, I guess ill just look at all the things you guys were telling me that could be making the sound. thanks again.


Ryan(KeN)

 

Engines can knock at idle. Ever hear of "rod knock"? It's indicative of a clearance issue (damaged crank journals, poor oil film surface/cushion between journals and bearings, "spun" bearings, etc.). It's not good.

Crank pulleys that are coming loose can knock.
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