I just installed a K&N SRI part# 69-4515TS, I know this is the one for the 2.2 but I bought it used from another 2.4 SS owner and he claims to have had no problems at all. Since I have installed it the engine will diesel or backfire, I'm not sure which it is doing. Does anyone know what the problem is and how it can be fixed?

 

check your map sensor, thats all i got

 

i think i thought i read those are oiled shoulda stayed away from the oiled ones not good just for that reason. anywhos yeah check the map if you cant figure it out remove that filter get a new DRY FILTER NO OIL.

ryan.

 

i have the same intake on my 2.4... no issues, but what i always tell people is, when you install an oiled filter, cram it full of paper towels and hit it with a low pressure air gun just to blast off any loose oil.

 

I don't think an intake can cause a true dieseling, the car is continuing to fire after you turn off the ignition? If the pcm is still working, it should disable fuel and spark when you shut off the key, so there shouldn't be any fuel to diesel on.

 

Joe,

So I bought mine from someone used and when I received it, it didn't have any instructions. I looked the instructions up on K&Ns website. The instructions mentioned gaskets which I didn't receive any. Are there supposed to be any?

 

An engine diesels after being turned off because of carbon deposits on the piston heads are superheated and continue to combust the remaining vapor in the chambers. Typically it's associated with Carbureted engines. You have to work pretty hard to get a fuel injection engine to diesel. because the fuel supply is electronically stopped when the engine is cut.
I would also think the engine dieseling could be a fault of a heavily oiled filter. Your car is still sucking an air/oil mixture in, the pistons are hot enough to combust it, leading to engine run on. But were talking ...super dooper oiled here, bad enough that it's probably making your fuel too rich with the added oil.
Replace your air filter with a dry flow, and run some higher grade gasoline in there for awhile to clean out the pistons.

 

Is there anyway to get some of the oil off of the filter so it will be safe to use? And I always use top tier fuel 91 octane or higher.

 

Somebody else mentioned a technique. Put a piece of cloth inside it, and use an air hose to blow some oil through the filter paper. Lot's of napkins and elbow grease work too.
You have a 2.4l engine right?

 

Yup 2.4 SS/NA!

 

those PC air cleaners work too to blast away the excess.

 

I was just thinking that if the filter was over oiled wouldn't I also be throwing a CEL? Is that correct or will it just be a matter of time before the MAF is affected by the oil?

 

if there is a problem with the MAF you're gonna be getting a CEL.

the problems with the oiled filters were mainly associated with the SS/SC's anyways b/c we're pulling so much air that it will pull the oil with it too.

you can always just wash the filter to get the oil off...

Put the stock intake back on, reset the ECU, and see what happens...

the engine shouldn't be doing that.

 

I wouldent use water to wash off excess filter oil. I did that once with an extreme Lid and got a pink sludge buildup on my filter which i can only assume was going in the engine too. Granted that car was carburated so it didn't have a maf to F up but i figure why risk it.

 

water doesnt wash oil away. you have to take a air hose and LIGHTLY blow off the excess i wouldnt wash it ruins the properties of it. or you can just buy a new dry filter from autozone. no biggy

ryan.

 

Can anyone explain to me why if it is the oil that is causing the problem, then why I am I not getting a CEL? I would think that if it is the oil then it would be collecting on the MAF also and cause a CEL. Is that not correct?

 

yeah i would say that would be right but i dont know. i mean do you really think its deiseling. i or is it backfire what is it actually.

ryan.

 

Now you have me questioning myself. So, how would I be able to tell if it is actually dieseling or backfiring? And if it is back firing is there anyway to stop it?

 

you have stock exhaust or are you running rich if you know what have you done with anything to the car.

deiseling well i dont think it would be cuzed soley by just an oiled filter. other guys are running oiled filters and no problems. but it would play that part into it.

ryan.

 

the sri is the only thing I have done so far. I don't have any way to check the afr to see if i am running rich. but if i just rev the engine while sitting still i do get a rich smell coming from the exhaust. if it is running rich, would that be a result of the maf possibly being in a new location?

 

i was thinkin maybe that the maf in the intake is pickin up with oil on it and thinkin that its not gettin enough air possibly and then backfiring and runnin a bit rich is the cause of that.

i would clean the filter or buy a dry one. maybe lightly blow out the sensor. run a good tank of 93 or 94 octane gas run that beast on the highway a few times and see how that goes and let me know.

ryan.

actually to correct myself the backfire would be from running lean. but from puddling fuel that could be that your dumpin to much cuz the maf is dirty. try that and let me know. do that asap

 

I had this problem, broke some connection to the MAF. It would randomly go lean and rich and God knows what, and stink like a ****.

Also it stained my exhaust tip. You didn't pull real hard on the MAF harness did you?

 

its held in by 2 screws so what the deal.


ryan.

 

No I didn't pull hard on the MAF harness. Were you getting CELs when you were having problems?


I'm sorry but I didn't exactly follow what you were saying there. I know running lean is very dangerous. But what exactly is it that you wanted me to try?



So I just went out to take another look at the car and this time I tried something different. Since the sound usually happens a few seconds after I turn off the ignition I tried turning it off while outside the car then going to the front of the car with the hood up to get a better idea of what it sounds like. And pretty much it sounds like the butterfly on the throttle body is slapping closed pretty hard. I don't know what that means, I hope it can help someone here help me to figure out what is going on.

 

well the butterfly wouldnt be slapping closed its partially closed already at idle. so it wouldnt be that.

and if its running lean unless, have the car run for alittle while. at op temp. put your hand over the exhaust and then smell it if it smells like gas then your rich. if more clean smelling then lean.

until you can test to see what you are running. id take it do the dealer cuz a backfire wouldnt be caused just from putting intake on. i never had that problem.

try that and let me know.

ryan.