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Old 08-01-2006, 11:03 AM
tvpierce's Avatar
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Join Date: Feb 2002
Location: Portland, ME
Posts: 612
Cleaning Intake Valves

My car is a ’92 201 w/2.3 ltr. with 185K miles.

I was experiencing an extremely high idle, so I have the whole intake off searching for vacuum leaks, and for a good cleaning. I actually found my air duct housing (the rubber bottom of the air flow sensor) had a major tear in it – I’m waiting for the part to arrive tomorrow.

In any event, I’ve completely cleaned the air flow sensor, the throttle body, and the intake manifold. It was a disgraceful mess of carbon/fuel/crud. Everything is spotless now, but I can see that the intake valves are all “crudded” up. Does anybody have a slick way to clean them without removing the head?

Thanks in advance for your insight.

Jeff Pierce
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Jeff Pierce

Current Vehicles:
'92 Mercedes 190E/2.3 (247K miles/my daily driver)
'93 Volvo 940 Turbo Wagon (263K miles/a family truckster with spunk)
'99 Kawasaki Concours
Gravely 8120
Previous Vehicles:
'85 Jeep CJ-7 w/ Fisher plow (226K miles)'93 Volvo 940 Turbo Wagon
'53 Willys-Overland Pickup
'85 Honda 750F Interceptor
'93 Nissan Quest
'89 Toyota Camry Wagon
'89 Dodge Raider
'81 Honda CB 750F Super Sport
'88 Toyota Celica
'95 Toyota Tacoma
'74 Honda CB 550F
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