Has anyone ever seen this much carbon build up in the intake?
01-09-2011, 07:21 PM
#21
Try this test.
6. CHECK EGR VALVE
(a) Apply vacuum directly to the EGR valve with the
engine idling.
(b) Check that the engine runs rough or dies.
(c) Reconnect the vacuum hoses to the proper locations.
If no problem is found with this inspection, the system is okay; otherwise inspect each part.
(a) Apply vacuum directly to the EGR valve with the
engine idling.
(b) Check that the engine runs rough or dies.
(c) Reconnect the vacuum hoses to the proper locations.
If no problem is found with this inspection, the system is okay; otherwise inspect each part.
If you don't have a vacuum pump, leave that hose connected at the top of the EGR valve and unplug the other end(the opposite of what it shows to do in the pic above)from the vacuum pipe. Then, after making sure that it's relatively clean(wiping any dirt/debris off), stick the unplugged hose end in your mouth and suck on it like a drinking straw. You can easily suck hard enough to open the valve and complete the test. If it's stuck/sticking open at all, you won't notice much difference. If it's working correctly, the engine will struggle to run significantly with vacuum applied. Then run as it should when you release vacuum pressure from the hose(pull the hose from your mouth).
Only the woefully misinformed imbecile would dare do something that detrimental to his engine.
By-passing/deleting/altering the PCV system in such a manner, or any manner, is one of THE DUMBEST things you can possibly do to any engine. I can't believe some people still think they can get away with that. They must like completely rebuilding their engine every few thousand miles.
A neglected PCV system will soon fail to function and the result can be
expensive as well as troublesome for the car owner. If the crankcase is not
adequately ventilated, the motor oil will quickly become contaminated and heavy
sludge accumulations will begin to form. Internal parts, not protected by the
motor oil, will begin to rust and/or corrode due to the water and acids that will
become trapped within the crankcase. If the PCV system is not functioning
properly, the flow of crankcase vapor into the intake manifold will not be properly
metered.
This, in turn, will upset the fuel/air mixture for combustion and cause rough idling
or even stalling of the engine. Furthermore, intake and exhaust valves, in
addition to spark plugs, may well be burned and rendered useless, prematurely
affecting performance and requiring expensive repairs. To assure trouble-free
performance of the PCV system and, in turn, the engine and vehicle, routine
maintenance of the PCV system is absolutely recommended and required.
expensive as well as troublesome for the car owner. If the crankcase is not
adequately ventilated, the motor oil will quickly become contaminated and heavy
sludge accumulations will begin to form. Internal parts, not protected by the
motor oil, will begin to rust and/or corrode due to the water and acids that will
become trapped within the crankcase. If the PCV system is not functioning
properly, the flow of crankcase vapor into the intake manifold will not be properly
metered.
This, in turn, will upset the fuel/air mixture for combustion and cause rough idling
or even stalling of the engine. Furthermore, intake and exhaust valves, in
addition to spark plugs, may well be burned and rendered useless, prematurely
affecting performance and requiring expensive repairs. To assure trouble-free
performance of the PCV system and, in turn, the engine and vehicle, routine
maintenance of the PCV system is absolutely recommended and required.
Last edited by MudHippy; 01-09-2011 at 09:01 PM.
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