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Hey Guys,
If you remember from my previous posting about my 16 valve's engine noise, I've got some more questions for you. I changed the exhaust manifold gasket, hoping that was a source of the noise, but it wasn't. There's still a loud ticking that doesn't go away when the car warms up. Someone suggested that I adjust the valves, but how do I do this on a 16 valve? What about doing something with the lifters?
I'm a little afraid to drive it much like this, so I'd really appreciate any ideas.
Thanks,
Dave
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posted by
someone claiming to be sunnya4
on
Wed Oct 20 09:01 CST 2004 [ RELATED]
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Hydraulic lifter noise will generally start out as an intermitant tapping that will disappear based on engine speed and temperature. Eventually it will progress to a constant tapping sound. Flushing may help although knocking loose a lot of sludge and particles in the process could make things worse. Replacing the lifters isn't that difficult but does require significant top end diassembly. If you replace your own timing belt you're about half way there and just need to remove the cam shafts to get to the lifters.
I've done it on my 1990 GLE wagon because flushing didn't really provide any real benefit (even with pofessional flushing additives).
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Your suggestion sounds like the real solution to the noise that my car makes. Where did you buy your new lifters from and how much should I expect to spend? I'll go ahead and replace the timing belt, oil seals, and tensioner while I'm in there. Are there any procedures for how to change the timing belt? Any adjustments that I have to do when replacing lifters?
Thanks,
Dave
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My bad. I owe Alex an apology. I guess I didn't pay close enough attention...16 valve, not 8 valve.
You've got hydraulic lifters. Alex is right. I worked on B-230FT motors, not the B-234F. I'll be more careful in the future.
Greg
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2001 V70 Wagon, 81K miles...'92 960 Wagon, 181K miles...'92 740 Turbo Wagon, 225K miles (retired)
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My bad. I owe Alex an apology. I guess I didn't pay close enough attention...16 valve, not 8 valve.
You've got hydraulic lifters. Alex is right. I worked on B-230FT motors, not the B-234F. I'll be more careful in the future.
Greg
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2001 V70 Wagon, 81K miles...'92 960 Wagon, 181K miles...'92 740 Turbo Wagon, 225K miles (retired)
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If i'm not horribly mistaken, your engine has hydralic lifters, don't think they need adjusting..
Could be a sticky lifter? Have you tried running an engine flush?
Are you loosing power, or any coolant, any mixing of fluids?
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-------Robert, '93 940t, '90 240 wagon, '84 240 diesel (she's sick) , '80 245 diesel, '82 Mercedes 300SD
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Hi Robert,
I'm really not that familar with the 16 valve. So, there's nothing to adjust in there? I guess I was thinking along the lines of an 8 valve. How do I do an engine flush on it? Power seems just fine, no mixing of fluids or anything like that.
Thanks,
Dave
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I just looked it up in my manual and it does say that the b234f has hydralic lifters which do not need adjusting.
To run a flush, you could try one of the cheap crancase flushes available at your local parts store( in the oil section, made by gunk etc) or a better bet would be to run a treatment with auto rx ( www.auto-rx.com it's costy , but really works) a good flush will clean out the passages, and the internal mechinisam of the lifter and many times will cure the things so they don't need to be replaced.
Hydralic lifters have very small oul passages, usually with little springs and check valves inside, this is a natural depository for sludge, so they usually jam up over time if oil maintnence hasn't been up to snuff.
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-------Robert, '93 940t, '90 240 wagon, '84 240 diesel (she's sick) , '80 245 diesel, '82 Mercedes 300SD
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This engine has solid lifters and requires small shims (discs) to adjust the clearance between the lifter and the camshaft lobe. Kits are available, but because the possible combinations of thickness needed, it is best for a qualifed shop to do the job. My 740 Turbo had 225K and never required adjustment...it continues to run quietly.
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This engine has solid lifters
Wrong.
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alex
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Alex,
I have rebuilt two B-230FT engines. This engine does not use hydraulic lifters. The lobes of the overhead cam ride on solid valve depressors, which require special shims when the clearance exceeds specs. Check your manual before rebutting next time.
Greg
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2001 V70 Wagon, 81K miles...'92 960 Wagon, 181K miles...'92 740 Turbo Wagon, 225K miles (retired)
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