Throttle body cleaning and oil

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Today I changed my oil, and afterward I cleaned my MAF & throttle body. I began to wonder if cleaning the throttle body had any impact on my fresh oil. I used GM Top Engine Cleaner. I have heard that you should use a fuel system cleaner before an oil change, and began to wonder what affect throttle body cleaner would have on the oil. Please forgive the simpleton nature of this question. Thanks in advance!
 
I would say it is better to do any sort of tb cleaning or combustion chamber cleaning before changing the oil. If you see how much smoke they produce, and sometimes cause rough running, I'm sure that some of those cleaners get into your oil. I usually do a fuel induction cleaning before I change the oil.
 
I agree only if the oil is going to be tested. It may give you funny numbers. I really don't see it being a big issue otherwise.


..but if you have a choice, sure, do it on the old sump. Just don't let it stop you from doing something.
 
Originally Posted By: Johnny248
I would say it is better to do any sort of tb cleaning or combustion chamber cleaning before changing the oil. If you see how much smoke they produce, and sometimes cause rough running, I'm sure that some of those cleaners get into your oil. I usually do a fuel induction cleaning before I change the oil.


+1
 
I just had my TB off for a coolant leak repair that exposed the intake for the first time. I have never sprayed out this TB this is 105,000mi

[img:center]http://i826.photobucket.com/albums/zz183/billytheshoe/100_1145.jpg?t=1283127879[/img]

inside the intake.
100_1144.jpg


I am considering intake removal at some point
100_1143.jpg










I removed the TBS /idle controller/MAF and hit it w/some Berryman's it all cleaned up well.
 
Originally Posted By: Hethaerto
You probably should inspect your crankcase vent system. Lots of oil vapors going down your intake. Something's wrong.
I am told that these pre 99' Northstar engines were this dirty for crank case ventilation and this is not out of the normal scope of an intake on a Northstar of equivalnt miles. It's quite nasty looking- this car runs very well and don't need to add oil 5000 OCI although it drops about a quart.
 
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Originally Posted By: willix
Originally Posted By: Hethaerto
You probably should inspect your crankcase vent system. Lots of oil vapors going down your intake. Something's wrong.
I am told that these pre 99' Northstar engines were this dirty for crank case ventilation and this is not out of the normal scope of an intake on a Northstar of equivalnt miles. It's quite nasty looking bout this car runs very well and don't need to add oil 5000 OCI although it drops about a quart.


Maybe so, but that's the dirtiest intake I've ever seen. :)

I'd probably try to jam some cheesecloth in there downstream of the vent plumbing to soak up some of that flying sludge. :D
 
Thanks for the responses. Even though it is optimum to do the cleaning before the oil change, can I assume that my new oil is fine?
 
Originally Posted By: PW01
Thanks for the responses. Even though it is optimum to do the cleaning before the oil change, can I assume that my new oil is fine?


Your new oil is ruined. Change it immediately.


Just kidding. :) I'd say your new oil is fine. If you're extra nervous about it, send off a sample for a used oil analysis.
 
Originally Posted By: Hethaerto
Originally Posted By: willix
Originally Posted By: Hethaerto
You probably should inspect your crankcase vent system. Lots of oil vapors going down your intake. Something's wrong.
I am told that these pre 99' Northstar engines were this dirty for crank case ventilation and this is not out of the normal scope of an intake on a Northstar of equivalnt miles. It's quite nasty looking bout this car runs very well and don't need to add oil 5000 OCI although it drops about a quart.


Maybe so, but that's the dirtiest intake I've ever seen. :)

I'd probably try to jam some cheesecloth in there downstream of the vent plumbing to soak up some of that flying sludge. :D
They did improve the PVC system post 99' or 2001 none of those parts interchange without engine management headaches. This engine would be a good candidate for a PCV trap/filter.
 
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I have seen TBs like that in modular8 engines with leaking valve seals: neither PCV nor EGR would do their job - after a while they choke. Looks like a neglected 300k+ TB to me.
 
you can dis the EGR system and PCV system lol, if your state do not have emission [censored] test stuff. It will keep your engine run cleaner. or you can install a oil catch can on the pcv hose. btw those pix above almost made me throw up lol. I would take it off the car and clean it up. using toothbrush and rags.
 
Originally Posted By: PW01
Thanks for the responses. Even though it is optimum to do the cleaning before the oil change, can I assume that my new oil is fine?


Carry on like normal. You've been hijacked.
55.gif
 
Originally Posted By: willix
I just had my TB off for a coolant leak repair that exposed the intake for the first time. I have never sprayed out this TB this is 105,000mi

[img:center]http://i826.photobucket.com/albums/zz183/billytheshoe/100_1145.jpg?t=1283127879[/img]

inside the intake.
100_1144.jpg


I'd clean that throttle body bore and plate real nice, but leave the intake alone. Either leave it alone, or take it off and clean it out perfectly. With all those convolutions, it won't help to clean it. But, you can do harm easily.

Concerning oil, it all depends on HOW you cleaned your TB. If you simply sprayed stuff down the pipe, your oil will have some added particulates and solvents in in afterwards.At least some.
Manual cleaning won't affect the oil. A manual cleaning is best, anyway.
This is why I use a catch can system. It attenuates or stops deposits like this from forming.


I am considering intake removal at some point
100_1143.jpg










I removed the TBS /idle controller/MAF and hit it w/some Berryman's it all cleaned up well.
 
Originally Posted By: Gary Allan
Originally Posted By: PW01
Thanks for the responses. Even though it is optimum to do the cleaning before the oil change, can I assume that my new oil is fine?


Carry on like normal. You've been hijacked.
55.gif

I I'v said enough. Aplogies for going off in left field. done
 
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[/quote]I I'v said enough. Aplogies for going off in left field. done[/quote]

Not at all, I've had my question answered. Run with your post, we may all learn something!
 
I'll try again.
TB cleaning won't affect the oil at all if the TB is removed first, or an careful manual cleaning is done.

Anytime you simply spray stuff down the intake it can cause some benefits, and also problems.

For the actual manifold [not he TB] either remove it and clean it right, or leave it alone. It won't hurt anything.
TBs are more critical and should be kept clean, however.

This is why I use a catch can - it attenuates or stops this build up.
 
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