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***midiwall*** · 01-20-2007, 10:52 PM

Speaking from personal experience (ARGH!) but there's no _real_ way to tell short of pulling the head.

You should do a leakdown test (search if that's not familiar to you). One thing that can quickly be done to give you a hint is a simple paper towel test.

Take a single sheet and hold it at the end of the tail pipe while the engine's running (idle is fine). If the towel seems to get sucked towards the pipe, then you have a stuck/burnt exhaust valve.

Bottom line though, the fix is generally same for either intake or exhaust - you have to pull the head.

Obviously this is a 6 banger, is this the 3.0 or 3.4? There's nothing in your sig or profile to help figure that out. (hint!)

01-20-2007, 10:52 PM	#3 (permalink)
*midiwall* Sponsoring Member Join Date: Dec 2002 Location: Seattleish, WA Posts: 9,078	Speaking from personal experience (ARGH!) but there's no _real_ way to tell short of pulling the head. You should do a leakdown test (search if that's not familiar to you). One thing that can quickly be done to give you a hint is a simple paper towel test. Take a single sheet and hold it at the end of the tail pipe while the engine's running (idle is fine). If the towel seems to get sucked towards the pipe, then you have a stuck/burnt exhaust valve. Bottom line though, the fix is generally same for either intake or exhaust - you have to pull the head. Obviously this is a 6 banger, is this the 3.0 or 3.4? There's nothing in your sig or profile to help figure that out. (hint!) __________________ ~ Mark '96 4Runner Limited S/C MI - 370cc injectors, Air! horns, Airaid MIT, ATS A-arms, 285/75/R16 BFG MTs, Bored TB, Brembo slotted, Cobra 75 WXST, Deckplate, Downey headers, Hayden cooler, IPT valve body, Level 10 torque convertor, Meanstreak exhaust, OME/OME rears, On-board PC (XM, Nav, WiFi, etc), Port 'n Polish, Remote Start, SAW fronts, Hilux console, SMT-5, Stubb's sliders, Supra MAF, TJM-17, 2.0" pulley, Viair 450c, Walbro 190, Weasy2k cams