. Good Luck Guy.
OK Guys, need some serious help!!
Thread Starter
Team Owner
Joined: Oct 2004
Posts: 35,065
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
Give it 8 years when the new baby gets older, you'll understand, and it's just the beginning. 
I just got home. Worked 6am-6pm today. After holding the couch down a little while, I'm going down to pull the sparkplugs and see what I got.
I'm starting to think collapsed lifter or flex plate.
I will also rotate the crank and pump up the other lifters.
I will post pics of the plugs.
I just got home. Worked 6am-6pm today. After holding the couch down a little while, I'm going down to pull the sparkplugs and see what I got.
I'm starting to think collapsed lifter or flex plate.
I will also rotate the crank and pump up the other lifters.
I will post pics of the plugs.
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
Give it 8 years when the new baby gets older, you'll understand, and it's just the beginning.
I just got home. Worked 6am-6pm today. After holding the couch down a little while, I'm going down to pull the sparkplugs and see what I got.
I'm starting to think collapsed lifter or flex plate.
I will also rotate the crank and pump up the other lifters.
I will post pics of the plugs.
I just got home. Worked 6am-6pm today. After holding the couch down a little while, I'm going down to pull the sparkplugs and see what I got.
I'm starting to think collapsed lifter or flex plate.
I will also rotate the crank and pump up the other lifters.
I will post pics of the plugs.
Thread Starter
Team Owner
Joined: Oct 2004
Posts: 35,065
Likes: 0
From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
I am 100% sure I did not SEE anything fall down the hole, I am NOT 100% certain nothing did.
Also, by hand I can check all the valve adjustments as I go. I may take the rockers and push rods out as I go to check them, then re adjust them.
Advanced
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This is a longshot but I think it's worth mentioning. I had a 92 and was on a trip cross country all of the sudden all hell broke loose clanking banging it was unbelieveable. Luckily I was close to a Chevy Dealership in Meridian, Miss. They fist thought it was a catostrophic failure from the way it sounded. They found a failed EGR valve dumped so much fuel into the exhaust that it cooked the pre-cats. All the ceramic ended up in the main cat and the metal that supported the ceramic was clanking and banging around inside the pre-cat housing and the noise resonated throughout the motor. Honest to God it sound like someone was hitting the block with a ball peen hammer.
It may be possible that with the new injectors and old pre-cats the same thing happened to you. Mine went from quiet to noisey quickly. I hope this helps.
It may be possible that with the new injectors and old pre-cats the same thing happened to you. Mine went from quiet to noisey quickly. I hope this helps.
Thread Starter
Team Owner
Joined: Oct 2004
Posts: 35,065
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
This is a longshot but I think it's worth mentioning. I had a 92 and was on a trip cross country all of the sudden all hell broke loose clanking banging it was unbelieveable. Luckily I was close to a Chevy Dealership in Meridian, Miss. They fist thought it was a catostrophic failure from the way it sounded. They found a failed EGR valve dumped so much fuel into the exhaust that it cooked the pre-cats. All the ceramic ended up in the main cat and the metal that supported the ceramic was clanking and banging around inside the pre-cat housing and the noise resonated throughout the motor. Honest to God it sound like someone was hitting the block with a ball peen hammer.
It may be possible that with the new injectors and old pre-cats the same thing happened to you. Mine went from quiet to noisey quickly. I hope this helps.
It may be possible that with the new injectors and old pre-cats the same thing happened to you. Mine went from quiet to noisey quickly. I hope this helps.
Thread Starter
Team Owner
Joined: Oct 2004
Posts: 35,065
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
Like I said earlier, the only reason it's a mystery is I don't have time to spend 3 hours in a clip on it. I do some simple tests, post it, wait a week till I have some time, try again. That's what's dragging it out.
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From: The Top of Utah
Originally Posted by 9tred
They found a failed EGR valve dumped so much fuel into the exhaust that it cooked the pre-cats. All the ceramic ended up in the main cat and the metal that supported the ceramic was clanking and banging around inside the pre-cat housing and the noise resonated throughout the motor.
RACE ON!!!
Race Director
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I want to see if any are damaged. Just verifying that nothing was dropped down there. I also perfer to turn the motor by hand, I will also pick up a compression guage and see how that looks.
I am 100% sure I did not SEE anything fall down the hole, I am NOT 100% certain nothing did.
Also, by hand I can check all the valve adjustments as I go. I may take the rockers and push rods out as I go to check them, then re adjust them.
I am 100% sure I did not SEE anything fall down the hole, I am NOT 100% certain nothing did.
Also, by hand I can check all the valve adjustments as I go. I may take the rockers and push rods out as I go to check them, then re adjust them.
Advanced
Joined: Jul 2004
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It was a 100% stock exhaust. You're way over my head or else I didn't explain myself clearly. I have no idea what your saying. The first thing the dealer asked is if my Check Engine light came on? It did not. Excessive fuel entered the exhaust the precats got cherry red and fell apart internally. I don't know what the intake manifold has to do with anything.
Race Director
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
The EGR is in the intake. It's a device that lets exhaust back into the intake (to cool the burn). In other words, the sucking would be going the WRONG way for it to dump fuel into the exhaust.
Scavenging is a term used to describe the sucking effect that headers have on adjacent cylinders. It helps speed exhaust flow and, hopefully, intake flow (kind of like a mini super-charger).
It all adds up to a screwy diagnosis by that dealership. And CFI-EFI's comment was pretty funny!
gp
Scavenging is a term used to describe the sucking effect that headers have on adjacent cylinders. It helps speed exhaust flow and, hopefully, intake flow (kind of like a mini super-charger).
It all adds up to a screwy diagnosis by that dealership. And CFI-EFI's comment was pretty funny!
gp
Le Mans Master
Joined: Sep 2006
Posts: 6,050
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From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
noise
I would back off all the valves a little so they are loose, and spin the pump again and see if they tighten up. Check for oil up at the rockers then. Sounds a little like the valve adjustment is too tight, repositioning the plungers in the lifters into a point that they can't get the oil up to the rockers, and can't function as hydraulic lifters.
thicker oil would also exacerbate the situation.
If I remember correctly, the galley plugs at the back of the engine are screwed in, and the front ones are plugs that are tapped in and staked unless the engine was rebuilt, and someone tapped the holes.
thicker oil would also exacerbate the situation.
If I remember correctly, the galley plugs at the back of the engine are screwed in, and the front ones are plugs that are tapped in and staked unless the engine was rebuilt, and someone tapped the holes.
Thread Starter
Team Owner
Joined: Oct 2004
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
So this is when I get to work on the car, midnight.....
Anyway, here's a few pictures of the sparkplugs, not surprisingly they are a little black as I only started the car for five seconds at a time and it probably ran rich each time, but take a look see if you see something I'm missing.....
Some background....the balcker ones were on the passenger side.
I took the drivers side out before I did the injectors and they looked fine
None of the plugs are damaged, which, indicates nothing is in the cylinder, I hope.
Anyway, here's a few pictures of the sparkplugs, not surprisingly they are a little black as I only started the car for five seconds at a time and it probably ran rich each time, but take a look see if you see something I'm missing.....
Some background....the balcker ones were on the passenger side.
I took the drivers side out before I did the injectors and they looked fine
None of the plugs are damaged, which, indicates nothing is in the cylinder, I hope.
Thread Starter
Team Owner
Joined: Oct 2004
Posts: 35,065
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
I would back off all the valves a little so they are loose, and spin the pump again and see if they tighten up. Check for oil up at the rockers then. Sounds a little like the valve adjustment is too tight, repositioning the plungers in the lifters into a point that they can't get the oil up to the rockers, and can't function as hydraulic lifters.
thicker oil would also exacerbate the situation.
If I remember correctly, the galley plugs at the back of the engine are screwed in, and the front ones are plugs that are tapped in and staked unless the engine was rebuilt, and someone tapped the holes.
thicker oil would also exacerbate the situation.
If I remember correctly, the galley plugs at the back of the engine are screwed in, and the front ones are plugs that are tapped in and staked unless the engine was rebuilt, and someone tapped the holes.
Advanced
Joined: Jul 2004
Posts: 91
Likes: 0
The EGR is in the intake. It's a device that lets exhaust back into the intake (to cool the burn). In other words, the sucking would be going the WRONG way for it to dump fuel into the exhaust.
Scavenging is a term used to describe the sucking effect that headers have on adjacent cylinders. It helps speed exhaust flow and, hopefully, intake flow (kind of like a mini super-charger).
It all adds up to a screwy diagnosis by that dealership. And CFI-EFI's comment was pretty funny!
gp
Scavenging is a term used to describe the sucking effect that headers have on adjacent cylinders. It helps speed exhaust flow and, hopefully, intake flow (kind of like a mini super-charger).
It all adds up to a screwy diagnosis by that dealership. And CFI-EFI's comment was pretty funny!
gp
I don't want to hyjack this thread so this is the last post here about my problem.
Thread Starter
Team Owner
Joined: Oct 2004
Posts: 35,065
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
Things to do today:
1. Loosen all the valves
2. Change the oil to 10-30 (I think it won't make a bit of difference, but WTF)
3. Prime the pump with the rockers loose and see if they all pump up with the thinner oil
4. re adjust the valves after the priming
5. put the dist back in
6. new plugs
7. see if it starts
Comments?
While doing this I'll see if I can recognize a collapsed lifter.
Oh, and CFI, I'm picking up a stethoscope while I'm out. Thanks for the tip.
1. Loosen all the valves
2. Change the oil to 10-30 (I think it won't make a bit of difference, but WTF)
3. Prime the pump with the rockers loose and see if they all pump up with the thinner oil
4. re adjust the valves after the priming
5. put the dist back in
6. new plugs
7. see if it starts
Comments?
While doing this I'll see if I can recognize a collapsed lifter.
Oh, and CFI, I'm picking up a stethoscope while I'm out. Thanks for the tip.
Last edited by jsup; Apr 12, 2008 at 09:07 AM.
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
We pointed this out on page 12. Loosening the rockers will do nothing, and I don't recommend it. stop changing parameters on the engine.
-- Joe
Thread Starter
Team Owner
Joined: Oct 2004
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From: Bergen County, NJ Democrats, doing for the country what they did for Michigan
They won't, can't. The lifters that are up out of the bore will not recieve oil. Thats why you have to rotate a motor several times when priming in.
We pointed this out on page 12. Loosening the rockers will do nothing, and I don't recommend it. stop changing parameters on the engine.
-- Joe
We pointed this out on page 12. Loosening the rockers will do nothing, and I don't recommend it. stop changing parameters on the engine.
-- Joe
Safety Car
Joined: Oct 2007
Posts: 3,816
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From: :45 minutes from everywhere / E-I-E-I-O
Man, can't a guy earn a living.....
Just got home from work.
Here's the link, if someone can embed it, thanks.
http://youtube.com/watch?v=r1TrI7R5nKI
I was on the phone with a forum member. He said "don't sound good" at the end. I said I know it don't. That splains that.
Just got home from work.
Here's the link, if someone can embed it, thanks.
http://youtube.com/watch?v=r1TrI7R5nKI
I was on the phone with a forum member. He said "don't sound good" at the end. I said I know it don't. That splains that.
Just my guess..............