pinging, sea foam, and dieseling
10-19-2007, 05:36 PM
#1
2nd Gear Member
Thread Starter
Join Date: May 2007
Location: wa
Posts: 330
pinging, sea foam, and dieseling
Alright... so i usually fill up with premium. I didn't the other day and now my car is pinging like none other.
I figured the compression might be up because of carbon build up and got some sea foam. After i sucked it up throught the brake booster line i shut the car off... except it didn't.
The ignition was off but it dieseled for a few seconds... and was knocking like crazy, really really loudly.
Anyways.. this concerned me a little bit and was wondering what i could do about it.
When i first got my car last year i filled up with regular and it didn't ping like this. And it's never dieseled before either.
Any ideas what could be going on? Spark plugs perhaps? Thanks!
Oh i haven't messed with anything.. timing and such. Just UD pulleys.
I figured the compression might be up because of carbon build up and got some sea foam. After i sucked it up throught the brake booster line i shut the car off... except it didn't.
The ignition was off but it dieseled for a few seconds... and was knocking like crazy, really really loudly.
Anyways.. this concerned me a little bit and was wondering what i could do about it.
When i first got my car last year i filled up with regular and it didn't ping like this. And it's never dieseled before either.
Any ideas what could be going on? Spark plugs perhaps? Thanks!
Oh i haven't messed with anything.. timing and such. Just UD pulleys.
10-19-2007, 06:44 PM
#3
2nd Gear Member
Thread Starter
Join Date: May 2007
Location: wa
Posts: 330
RE: pinging, sea foam, and dieseling
i'm not sure... i've never checked the timing. i don't have a timing light and no money to get one. lol
i thought that might have something to do with it though...
i thought that might have something to do with it though...
10-19-2007, 07:18 PM
#4
2nd Gear Member
Join Date: Jul 2007
Location:
Posts: 200
RE: pinging, sea foam, and dieseling
Have you started it after the seafoam injection? You need to get that carbon out of there. See if an auto part store will let you borrow a timing light. Autozone here will let you use one for free in the parking lot. Could be a combination of carbon build-up and timing.
10-19-2007, 07:32 PM
#5
2nd Gear Member
Thread Starter
Join Date: May 2007
Location: wa
Posts: 330
RE: pinging, sea foam, and dieseling
Good idea. I never thought about renting one/seeing if they would let me use it.
It does run a lot better after sea foaming it although i haven't had time to drive it yet.
I'll go by an autoparts store tomorrow.
It does run a lot better after sea foaming it although i haven't had time to drive it yet.
I'll go by an autoparts store tomorrow.
10-19-2007, 08:07 PM
#7
D.R. THE PATHETIC DORK
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
RE: pinging, sea foam, and dieseling
You need to runa KOEO/KOER test and make sure no codes for the egr are present and you can manually test the egr valve with a vaccum gauge and when you apply vaccum to the egr valve it should make the car run rough and or stall out...if it does then you know the egr passages aren't plugged up with carbon......the egr is there to quench the cylinder chamber temps to lower Nox and or possibility of detonation.....higher NOX levels are present when there are elevated cylinder chamber temps which inturn will contribute to pinging/spark detonation
10-19-2007, 09:36 PM
#8
5th Gear Member
Join Date: Oct 2005
Location: Ohio USA
Posts: 4,616
RE: pinging, sea foam, and dieseling
ORIGINAL: 93_five_oh
Alright... so i usually fill up with premium. I didn't the other day and now my car is pinging like none other.
I figured the compression might be up because of carbon build up and got some sea foam. After i sucked it up throught the brake booster line i shut the car off... except it didn't.
The ignition was off but it dieseled for a few seconds... and was knocking like crazy, really really loudly.
Anyways.. this concerned me a little bit and was wondering what i could do about it.
When i first got my car last year i filled up with regular and it didn't ping like this. And it's never dieseled before either.
Any ideas what could be going on? Spark plugs perhaps? Thanks!
Oh i haven't messed with anything.. timing and such. Just UD pulleys.
Alright... so i usually fill up with premium. I didn't the other day and now my car is pinging like none other.
I figured the compression might be up because of carbon build up and got some sea foam. After i sucked it up throught the brake booster line i shut the car off... except it didn't.
The ignition was off but it dieseled for a few seconds... and was knocking like crazy, really really loudly.
Anyways.. this concerned me a little bit and was wondering what i could do about it.
When i first got my car last year i filled up with regular and it didn't ping like this. And it's never dieseled before either.
Any ideas what could be going on? Spark plugs perhaps? Thanks!
Oh i haven't messed with anything.. timing and such. Just UD pulleys.
10-20-2007, 01:02 PM
#10
2nd Gear Member
Thread Starter
Join Date: May 2007
Location: wa
Posts: 330
RE: pinging, sea foam, and dieseling
i thought about bad gas too...
I pulled codes a while back. It was something about the egr (fixed that) and the EVP voltage or something like that. I don't remember, i'd have to check.
I know it smokes.. i'm done. it runs much better now...
but.. this is another question. How do i figure out which cylinder isn't firing? i'm pretty sure one's not firing on the left bank.
I pulled codes a while back. It was something about the egr (fixed that) and the EVP voltage or something like that. I don't remember, i'd have to check.
I know it smokes.. i'm done. it runs much better now...
but.. this is another question. How do i figure out which cylinder isn't firing? i'm pretty sure one's not firing on the left bank.