Engine Pinging

[88vert]

Bad wires

 

[jar2187]

Do I need to replace the coil pack along with plugs and wires

 

[88vert]

Originally posted by jar2187
Do I need to replace the coil pack along with plugs and wires

I would just change the plugs and wires,then go from there.

 

[jar2187]

what plugs and wires should I get, and how much do u think they are going to cost?

 

[88vert]

I always use motorcraft plugs,and exact fit wires you can get the plugs and wires at autozone for under 30 bucks.

 

[jar2187]

Cool thanx so much

 

[88vert]

Good luck

Keep us posted on your progress

 

[jar2187]

I will

 

[jar2187]

update, I replaced the plugs and wires finally, Still pinging. I then bought SeaFoam and ran that through. Didn't smoke. Still pings!!! I have also cleaned TB, and MAS.

 

[Rhett]

That means you're either getting unmetered air into the system, and you're not getting enough fuel (lean).
Have you ever reset the computer?
Another possibility is that your trucks computer has gone haywire and needs to be replaced. This is uncommon but has solved pinging on some.

Did you ever replace the FPR? Earlier in the thread it sounded like the FPR was bad.

How about the O2 sensor (you might have 2 on your truck but I'd guess 1)?

 

[jar2187]

Havent replaced the FPR, hate to replace it if its fine. Yes I have reset the computer, when I cleaned the MAS and IAC. Havent replaced the O2s yet.

 

[jar2187]

Bump

 

[Rhett]

Unmetered air could be getting into the system somehow. Have you re-torqued the upper and lower intake manifold bolts? Check for good seal around all intake areas from air filter to throttle body.

 

[jar2187]

yes I have but, the upper intake looks as though it is too far to the drivers side, I can see a hole a little bit of a cavity on the passengers side, maybe its the inside of the lower intake?

 

[Maniak]

If you think you can see where unmetered air is going in, you can test to see if it is..

Get a propane torch.. and turn it on (turn on the gas, DON'T LIGHT IT)... and aim it where you think the unmetered air is going in.. If the idle goes up, then yes, you are leaking from around there.. if not, your chasing the wrong thing..


on a side note.. I started to pick up ping again a few weeks ago.. I had already retorqued the intake bolts, and was going to check my work when I decided to use seafoam.

I'm not sure how much good the seafoam did.. BUT when I got the smoke from it I noticed I not only had smoke out the exhaust (like I should), but I had it under the engine compartment..

I checked around and I found it was leaking from the exhaust manifold... I replaced the manifold gaskett (I put 2 gaskets there (with "right stuff" rtv type stuff between them) and now my pinging is gone..

Remember, an exhaust leak can cause it to run lean too and can cause pinging..

~Mark

 

[jar2187]

Thats an idea. How would I tell if the exhaust manifold is leaking. By the way you know the sound of an engine from a pos car thats falling apart, when someone guns its. Well thats what my truck sounds like just driving at 2,000 rpms, it pings louder now, but some days its not as loud. And lacks power. It sounds like the engine is falling apart.

 

[Maniak]

I made my exhaust smoke.. and I saw smoke coming out of the manifold.. that worked for me... To make it smoke, I used seafoam, which will clean away carbon deposits... I just put a hose from the vacuum t into the canand let it lift it up.. (put it in, take it out, put it in, take it out so I didn't flood the motor)... I got some smoke while it was doing that.. but after I let it sit like you are supposed to, and then restarted it.. I had lots of smoke.. mostly from the exhaust pipe.. but I had a bunch from the leaking exhaust manifold.. (took me 10 minutes to change it out... It may take you longer as I don't have inner fenderwells, so I can just rear over the tire to touch the exhaust manifold)

Also, check for stupid little things too...

for exaple...

is a spark plug loose (been there, done that)..
Is a spark plug fouled (usually the #5 will be, which also usually means the lower intake is leakign)...

good luck...
~Mark

 

[jar2187]

when i was changing the plugs, plug 5 had whitish black ash on it. Is this fouled