Earlier today I fed about 1 cup of MMO through the brake booster. I revved the engine momentarily, and then turned the key off about 1 minute later. Then I noticed that my engine was still running! It was clacking like a diesel, and kept running for another 10 seconds. I went ahead and started it right back up again. It clacked a few times, then ran normally. What the heck was that all about?
Strange Occurrence After MMO in Vacuum
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that's called "dieseling" and it is just part of the deal when you try to run solvents in your already hot combustion chamber even w/o sparks.
I would not run something like this in my 3 yr old car, not even in my dad's 7yr old 7th gen Civic, period.
Q.
I would not run something like this in my 3 yr old car, not even in my dad's 7yr old 7th gen Civic, period.
Q.
Originally Posted By: V1
Earlier today I fed about 1 cup of MMO through the brake booster. I revved the engine momentarily, and then turned the key off about 1 minute later. Then I noticed that my engine was still running! It was clacking like a diesel, and kept running for another 10 seconds. I went ahead and started it right back up again. It clacked a few times, then ran normally. What the heck was that all about?
I bet your intake system is clean,
Earlier today I fed about 1 cup of MMO through the brake booster. I revved the engine momentarily, and then turned the key off about 1 minute later. Then I noticed that my engine was still running! It was clacking like a diesel, and kept running for another 10 seconds. I went ahead and started it right back up again. It clacked a few times, then ran normally. What the heck was that all about?
I bet your intake system is clean,
Yeah, I'm not doing that anymore because I'm still slightly horrified by the whole experience. Could my engine have been wrecked during that "dieseling" process?
I think MMO is only for fixing up rusted. seized pistons. Pour it down the spark plug holes and let it sit for a day or two.
I would not run it down the vacuum line nor pour it into the oil pan.
There are much better solutions for cleaning the intake system such as Chevron Techron or Amsoil PI.
I would not run it down the vacuum line nor pour it into the oil pan.
There are much better solutions for cleaning the intake system such as Chevron Techron or Amsoil PI.
Let's just hope that the "dieseling" isn't going to "wipe off" your main/rod bearings, causing excessive bearing clearances down the road (known as "rod/bearing knock" if clearance is excessive)
That's all I care for and so should you.
(*and that's why I would not run something like that to begin with*)
Q.
That's all I care for and so should you.
(*and that's why I would not run something like that to begin with*)
Q.
A lot of cars used to do that.
The early versions of pollution controls and carberators conbined to cause 'run-on' after a hot shut off.
Since it was only once, it likely didn't do any damage.
DON'T DO THAT AGAIN!
The early versions of pollution controls and carberators conbined to cause 'run-on' after a hot shut off.
Since it was only once, it likely didn't do any damage.
DON'T DO THAT AGAIN!
Why were you using MMO? I thought Seafoam was the correct product for this type of use.
Originally Posted By: The Critic
Why were you using MMO? I thought Seafoam was the correct product for this type of use.
That's because you're by the book on everything. I've never heard the term ''abutment joints'' until reading one of your posts Mike. LOL!
Why were you using MMO? I thought Seafoam was the correct product for this type of use.
That's because you're by the book on everything. I've never heard the term ''abutment joints'' until reading one of your posts Mike. LOL!
Originally Posted By: Merkava_4
Originally Posted By: The Critic
Why were you using MMO? I thought Seafoam was the correct product for this type of use.
That's because you're by the book on everything. I've never heard the term ''abutment joints'' until reading one of your posts Mike. LOL!
I guess I'll take that as a compliment.
Oh, and it's abutment points, not joints. Another term for those clips are "pad support plates" as well.
Originally Posted By: The Critic
Why were you using MMO? I thought Seafoam was the correct product for this type of use.
That's because you're by the book on everything. I've never heard the term ''abutment joints'' until reading one of your posts Mike. LOL!
I guess I'll take that as a compliment.
Oh, and it's abutment points, not joints. Another term for those clips are "pad support plates" as well.
I can see you growing up to be a National Transportation Safety Board inspector (NTSB).
Actually, that's a pretty good job.
Actually, that's a pretty good job.
Originally Posted By: Merkava_4
Originally Posted By: The Critic
Why were you using MMO? I thought Seafoam was the correct product for this type of use.
That's because you're by the book on everything. I've never heard the term ''abutment joints'' until reading one of your posts Mike. LOL!
yeah no kidding, i'd just call them the pad ears or something
Originally Posted By: The Critic
Why were you using MMO? I thought Seafoam was the correct product for this type of use.
That's because you're by the book on everything. I've never heard the term ''abutment joints'' until reading one of your posts Mike. LOL!
yeah no kidding, i'd just call them the pad ears or something
If you going to run things into your intake that are not gasoline you should give your car a break and run it for a few minutes after to burn through it all and get back to burning gasoline again. By the way MMO in the intake via a vacuum line is done by a lot of the older mechanics to clean something out rather than change all the parts. A lot of young technicians have no idea how to fix something, just change things and the shops they work in are geared to component level swapping for service. How many current mechanics have never seen a rod bearing, surfaced a head or brazed a fitting back together? That type of work has disappeared. I'll give you an example of the difference between us old guys and a dealership. A customer came in with a late model V12 Lambo with a bent valve with a cracked head. The dealer estimate was outrageous, replacing everything in the way including one very expensive head. We machined out the bad metal, and I welded it up and ground everything back to like new and we had him back on the road in 5 days for $2000. $2000 would not have covered the gaskets and misc parts on the dealer's estimate and getting a new head would have been a long time because the dealer would not rebuild a used one for him. I don't think they are equipped to do it. We had him take the car after we fixed it to an independent shop that deals in Lambo's for a checkup and everything is working just fine. Actually the independent shop finished it by doing some fine tuning and then a general service for the whole car. Do you think the Lambo guy is going to see the dealer any more?
Originally Posted By: V1
Yeah, I'm not doing that anymore because I'm still slightly horrified by the whole experience. Could my engine have been wrecked during that "dieseling" process?
nope........the worst that would happen is u foul out your plugs
Yeah, I'm not doing that anymore because I'm still slightly horrified by the whole experience. Could my engine have been wrecked during that "dieseling" process?
nope........the worst that would happen is u foul out your plugs
Really? Well that makes me feel a whole lot better. During that 10 seconds, my engine sounded like a diesel with a really harsh knock. Then it slowly "died." I've been curious about how severe the damage was (or could have been).
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I remember that happening after spraying some areas of the carb on the "neglected" family vehicle when I was pre-15. It was weird to say the least to have the engine still running along after you turn and remove the key. It got rough quickly and soon stopped with a backfire. Needless to say, my mother wasn't at all impressed and I don't recall seeing the underside of the hood on that vehicle for some time.
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My '00 VW GTI 1.8T did the same thing when I tried to feed Seafoam through a random vacuum hose. The sound scared the heck out of me, but it doesn't seem any the worse for wear because of it. That happened about a year ago.
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Originally Posted By: Curious Kid
I remember that happening after spraying some areas of the carb on the "neglected" family vehicle when I was pre-15. It was weird to say the least to have the engine still running along after you turn and remove the key. It got rough quickly and soon stopped with a backfire. Needless to say, my mother wasn't at all impressed and I don't recall seeing the underside of the hood on that vehicle for some time.
Hmmm. Now we know where your user ID came from. "what happens when you press this button?"
I remember that happening after spraying some areas of the carb on the "neglected" family vehicle when I was pre-15. It was weird to say the least to have the engine still running along after you turn and remove the key. It got rough quickly and soon stopped with a backfire. Needless to say, my mother wasn't at all impressed and I don't recall seeing the underside of the hood on that vehicle for some time.
Hmmm. Now we know where your user ID came from. "what happens when you press this button?"
Originally Posted By: Gary Allan
Originally Posted By: Curious Kid
I remember that happening after spraying some areas of the carb on the "neglected" family vehicle when I was pre-15. It was weird to say the least to have the engine still running along after you turn and remove the key. It got rough quickly and soon stopped with a backfire. Needless to say, my mother wasn't at all impressed and I don't recall seeing the underside of the hood on that vehicle for some time.
Hmmm. Now we know where your user ID came from. "what happens when you press this button?"
LOL. Merry Christmas everyone.......time to go eat some foooooooooooooooooooooood
Originally Posted By: Curious Kid
I remember that happening after spraying some areas of the carb on the "neglected" family vehicle when I was pre-15. It was weird to say the least to have the engine still running along after you turn and remove the key. It got rough quickly and soon stopped with a backfire. Needless to say, my mother wasn't at all impressed and I don't recall seeing the underside of the hood on that vehicle for some time.
Hmmm. Now we know where your user ID came from. "what happens when you press this button?"
LOL. Merry Christmas everyone.......time to go eat some foooooooooooooooooooooood
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