Removing carbon build up on pistons?

Engine and tranny related questions or discussions...

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Topic Author
ms2000
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Posts: 71
Joined: May 10th, 2015, 11:38 pm

Removing carbon build up on pistons?

Postby ms2000 » April 15th, 2016, 9:25 pm

My car with 170k, brown top engine, gave SMOG reading in CA as below:

NO - Nitrous Oxide
Speech Max Meas
15 760 875
25 542 535

A m/c tells me it is the result of carbon build up on pistons.

Is there a quick fix?

Incidentally it gave the following in 2010 - upon retesting without any repair it passed:

Nitrous Oxide or NO
Speed Max Meas
15 760 656
25 542 678

Note: Recent oil change (Mobil 1 High Mileage), tune up, PCV Vale, Thermostat, NGK Plat spark

Thanks


d16a3teg
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Re: Removing carbon build up on pistons?

Postby d16a3teg » April 16th, 2016, 11:19 am

You could try an upper engine cleaner - foaming cleaner that is sprayed in the throttle body and you let soak for 15 minutes then run the car and empty the remainder of the can into the inlet. This is meant to help clean out carbon deposits
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Topic Author
ms2000
G1 n00b
Posts: 71
Joined: May 10th, 2015, 11:38 pm

Re: Removing carbon build up on pistons?

Postby ms2000 » April 16th, 2016, 5:26 pm

Will this work?
https://www.youtube.com/watch?v=u6UeJXkzDW8

If I do this, do I need to empty the engine oil - just changed the oil.

A m/c said put two can of sea foam in the gas tank - how does this comapre with the above - stores do not have the one used in the youtube?


Topic Author
ms2000
G1 n00b
Posts: 71
Joined: May 10th, 2015, 11:38 pm

Re: Removing carbon build up on pistons?

Postby ms2000 » April 16th, 2016, 7:59 pm

Does this car has any OBD1 codes if there is never a check engine light?

Does the throttle body get dirty on gen1?

On the way to the SMOG, I did hit hard on the gas but at 40-60mph, it was not that responsive - what might be the cause?


AlexmenIsog
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Removing carbon build up on pistons

Postby AlexmenIsog » November 13th, 2016, 3:16 am

Yesterday I witnessed firsthand the need for a catch can while cleaning the intake manifold of my LFX. Tremendous oil and carbon buildup after 14K miles without one.


rentdresfpg
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Removing carbon build up on pistons

Postby rentdresfpg » December 8th, 2016, 3:10 am

Cool Looking forward to checking out n keeping up with your build.
By the way, did the tune do anything significant?

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Bag
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Re: Removing carbon build up on pistons?

Postby Bag » June 25th, 2017, 4:29 am

Mist some water into throttle body. Small amounts will steam carbon away.

https://m.youtube.com/watch?v=eZDISp2pdSo
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