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Will meth clean my 38k mike intake valves?

Started by GIGANTORE, October 23, 2017, 10:07:22 PM

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GIGANTORE

So I ordered an Alky kit for my new (to me) 38k mile SHO. I've notice that idle can be just a hair rough when cold. And I know that the back of these valves can get caked with unburnt fuel, causing a rougher idle. I'm wondering if the use of meth will eventually clean the back of lo of these valves. Anyone know of any evidence that meth has made any difference in reversing the accumulation?

ZSHO

#1
It all depends on the severity of the issue!! The Hair line rough idle you claim is normal on this platform. AFAIK.  Z


2013 Performance Package SHO| Livernois Custom Methanol Tune|3-Bar Map|Reische-170-Stat|Full Race Tial-10psi BOV in Black|PPE-Gloss Black Hot Pipes|EPP Dual Intake in Gloss Black|PPE Catted DP|Corsa Sport Cat Back Exhaust|H&R Sport-Springs|CFM Performance Billet Valve Cover Breather In Gloss Black|Llumar 20%Ceramic window Tint|MSD Ignition Coils in Black|Extreme Roof Spoiler|Redline Fluids all around|Gearhead Intercooler|First-SHO With Direct Port Alky-VP-M1-100%-Methanol Injection|LMS-Custom-Dyno-Tuned @ 415whp-465wtq| Best Trap Speed of 115.54 mph|

SHOdded

#2
To gauge the severity of the problem, I would look at the inside of the intercooler/CAC.  If it is dry or has barely any accumulation of crud, more than likely the backs of the intake valves are doing good also.  Not sure how strong of a solvent methanol is.

Fun "old" read btw
http://www.hotrod.com/articles/ctrp-0702-alcohol-engine-maintenance/
https://www.hemmings.com/magazine/mus/2008/01/The-Lost-Art-of-Chemical-Carbon-Removal/1567737.html

http://www.oilem.com/turbo-fuel-stratified-injection-tfsi-direct-port-injection-carbon-build-up-problem/#comment-1842
"Forced induction DI engines are the easiest to treat as the carbon is generally softer and lower in volume when compared to NA DI engines, where the carbon build-up is usually much greater in volume and harder. This is because the build-up in NA engines usually has much more oil lube contamination making it much more difficult to remove. The Audi RS4 engine springs to mind."
2007 Ford Edge SEL, Powerstop F/R Brake Kit, TXT LED 6000K Lo & Hi Beams, W16W LED Reverse Bulbs, 3BSpec 2.5w Map Lights, 5W Cree rear dome lights, 5W Cree cargo light, DTBL LED Taillights

If tuned:  Take note of the strategy code as you return to stock (including 3 bar MAP to 2 bar MAP) -> take car in & get it serviced -> check strategy code when you get car back -> have tuner update your tune if the strategy code has changed -> reload tune -> ENJOY!

GIGANTORE

Thanks for the info. Ill see what LMS has to say