Oil on my spark plugs?
#1
Junior Member
Thread Starter
Join Date: Mar 2012
Location: Las Vegas
Posts: 98
Likes: 0
Received 0 Likes
on
0 Posts
Car: 87 Camaro Lt
Engine: 350
Transmission: 700R4
Axle/Gears: 4th gen 3:42, posi, disc
Oil on my spark plugs?
87 lg4 all stock except for headers and exhaust.
My car is slightly smoking white out the exhaust and out the valve cover breathers. This is due to a faulty intake manifold gasket I think because it started after I broke one of the intake bolts loose and it started to leak.
I plugged the valve cover holes for a second so I could work on it without smoke in my face. Within seconds the car stalled and I can't get it running again. I pulled the plugs and everyone is covered in oil (they have maybe 300 miles on them). I know by plugging the breather holes I prevented the crankcase from breathing but What do you think happened to get oil all over my plugs? I don't want to blow 70$ on plugs just to have them foul again.
Any ideas?
My car is slightly smoking white out the exhaust and out the valve cover breathers. This is due to a faulty intake manifold gasket I think because it started after I broke one of the intake bolts loose and it started to leak.
I plugged the valve cover holes for a second so I could work on it without smoke in my face. Within seconds the car stalled and I can't get it running again. I pulled the plugs and everyone is covered in oil (they have maybe 300 miles on them). I know by plugging the breather holes I prevented the crankcase from breathing but What do you think happened to get oil all over my plugs? I don't want to blow 70$ on plugs just to have them foul again.
Any ideas?
#2
Member
Join Date: Nov 2001
Location: Fallston&Owings Mills,Md.
Posts: 208
Likes: 0
Received 0 Likes
on
0 Posts
Re: Oil on my spark plugs?
I usually scrape all the deposits off the old ones ....reset the gap an continue to use...AC45TS are like $2.50 each? So I save $20
#3
Senior Member
Join Date: Sep 2006
Location: San Antonio, Tx
Posts: 568
Likes: 0
Received 7 Likes
on
6 Posts
Car: 1988 Camaro IROC-Z
Engine: LB9 (305 TPI)
Transmission: 700R4
Axle/Gears: 2.73 Positraction
Re: Oil on my spark plugs?
$70 on plugs?? I run UR4 NGK V-Powers for under $2 a plug...In your case I see NO sense wasting high dollars on a stock motor.
You can clean off the plugs with a rag, and wire brush them to get any hard deposits off them. Check the gaps and reinstall. I had fouling issues for over a year before I finally took off my heads and re-did them. If you're not sure where the oil is coming from, take a black sharpie marker and mark the top of the tip of each plug before you pull it from the engine. This way you can tell the orientation of the plug as it sat in the engine when you have it out. If the oil fouling is on the top of the plug, you have valve seal leakage. If the oil fouling is on the bottom of the plug, you have ring blow by. Either was probably exacerbated by the lack of adequate crankcase breathing.
You can clean off the plugs with a rag, and wire brush them to get any hard deposits off them. Check the gaps and reinstall. I had fouling issues for over a year before I finally took off my heads and re-did them. If you're not sure where the oil is coming from, take a black sharpie marker and mark the top of the tip of each plug before you pull it from the engine. This way you can tell the orientation of the plug as it sat in the engine when you have it out. If the oil fouling is on the top of the plug, you have valve seal leakage. If the oil fouling is on the bottom of the plug, you have ring blow by. Either was probably exacerbated by the lack of adequate crankcase breathing.
#4
Junior Member
Thread Starter
Join Date: Mar 2012
Location: Las Vegas
Posts: 98
Likes: 0
Received 0 Likes
on
0 Posts
Car: 87 Camaro Lt
Engine: 350
Transmission: 700R4
Axle/Gears: 4th gen 3:42, posi, disc
Re: Oil on my spark plugs?
Hey folks sorry for the long wait, I've been in cali for a month. So I pulled all the plugs and and replaced them with new ones. I got the same result. Motor ran for like 2 seconds and then stalled. I started again, this time pressing on the throttle and could keep the motor running but it sounded like it was firing on 4 cylinders. Pulled the plugs again and Cylinders 4 and 5 were completely covered in oil. #7 and #8 looked normal and the rest were barely oily. My mechanic told me to pull all the plugs, spray carb cleaner directly in through the spark plug hole and turn it over(with no plugs in) after its been sitting for 5 minutes. Then to reinstall spark plugs. Does this sound safe?
What does the problem sound like to you?I was thinking a valve or a ring until I saw it was on both sides of the motor, now I won't know till I test it.
Will do a compression test once I can get a new one to fit under the headers.
What does the problem sound like to you?I was thinking a valve or a ring until I saw it was on both sides of the motor, now I won't know till I test it.
Will do a compression test once I can get a new one to fit under the headers.
#5
Member
Join Date: Jun 2011
Posts: 198
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Oil on my spark plugs?
If you do that you better unplug the ignition first! spark plus carb cleaner = fire
#6
Junior Member
Thread Starter
Join Date: Mar 2012
Location: Las Vegas
Posts: 98
Likes: 0
Received 0 Likes
on
0 Posts
Car: 87 Camaro Lt
Engine: 350
Transmission: 700R4
Axle/Gears: 4th gen 3:42, posi, disc
Re: Oil on my spark plugs?
Today I was doing what my mechanic told me to do to clean the cylinders out. When I unplugged my fuel line to the carb TONS of fuel came out. I filled half a gallon of gas before I thought to open my gas cap. What would make this happen?
Pretty sure this Is why my car won't run unless I'm pressing on the throttle.
Pretty sure this Is why my car won't run unless I'm pressing on the throttle.
#7
Member
Join Date: Jun 2011
Posts: 198
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Oil on my spark plugs?
Today I was doing what my mechanic told me to do to clean the cylinders out. When I unplugged my fuel line to the carb TONS of fuel came out. I filled half a gallon of gas before I thought to open my gas cap. What would make this happen?
Pretty sure this Is why my car won't run unless I'm pressing on the throttle.
Pretty sure this Is why my car won't run unless I'm pressing on the throttle.
Trending Topics
#8
Junior Member
Thread Starter
Join Date: Mar 2012
Location: Las Vegas
Posts: 98
Likes: 0
Received 0 Likes
on
0 Posts
Car: 87 Camaro Lt
Engine: 350
Transmission: 700R4
Axle/Gears: 4th gen 3:42, posi, disc
Re: Oil on my spark plugs?
Well the car hasn't been turned over in a month. I expected the bowls to be empty by then. Normally If I don't drive for two days I have to pump it a few times to prime the bowls. I was Just taking precautions by unplugging the fuel lines.
Either way, with that much fuel pressure would that be enough to cause my problem? I'm just confused because it looks like oil on my plugs, but smoke coming out the exhaust is black for sure and not blue.
I'm hoping now that I relieved all that fuel pressure my car will run right. Waiting for all the spilled gas to dry up before reconnecting everything and trying it.
#9
Member
Join Date: Jun 2011
Posts: 198
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Oil on my spark plugs?
Well the car hasn't been turned over in a month. I expected the bowls to be empty by then. Normally If I don't drive for two days I have to pump it a few times to prime the bowls. I was Just taking precautions by unplugging the fuel lines.
Either way, with that much fuel pressure would that be enough to cause my problem? I'm just confused because it looks like oil on my plugs, but smoke coming out the exhaust is black for sure and not blue.
I'm hoping now that I relieved all that fuel pressure my car will run right. Waiting for all the spilled gas to dry up before reconnecting everything and trying it.
Either way, with that much fuel pressure would that be enough to cause my problem? I'm just confused because it looks like oil on my plugs, but smoke coming out the exhaust is black for sure and not blue.
I'm hoping now that I relieved all that fuel pressure my car will run right. Waiting for all the spilled gas to dry up before reconnecting everything and trying it.
#10
Junior Member
Thread Starter
Join Date: Mar 2012
Location: Las Vegas
Posts: 98
Likes: 0
Received 0 Likes
on
0 Posts
Car: 87 Camaro Lt
Engine: 350
Transmission: 700R4
Axle/Gears: 4th gen 3:42, posi, disc
Re: Oil on my spark plugs?
Alright, so I havent solved this headache yet. I took it to a shop and they told me it was my carb flooding itself and it needed a rebuild. Well I ditched the carb/dizzy , and replaced them with a mechanical quadrajet from mountain man carbs along with a msd streetfire distributor. Hooked everything up and turned the key. It started right up and ran for 4 seconds then stalled out. Now the plugs are fouled again. What should I look at next?
Thread
Thread Starter
Forum
Replies
Last Post
1992 Trans Am
History / Originality
27
05-10-2023 07:19 PM
evilstuie
Exhaust
24
02-28-2016 03:33 PM
eightsixseven
Tech / General Engine
1
08-14-2015 03:09 PM