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#1
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#2
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My daughter's 97 Jetta 2.0 with 110k miles was over heated pretty good a little under a year ago. At that point it started ticking. It sounds like just one thing, either the intake or exhaust valve/lifter/rod on just one cylinder. It has progressively worsened from a tick to a whack. So, is this typical behavior if it were just a lifter? Do they get progressively worse? Or, is it more likely some other melted part: rod, valve, etc. If only a lifter, I think I could manage that job, although advice is graciously accepted. There are no other symptoms from the overheating -- it doesn't burn oil at an increased rate, there's no oil in the coolant or vice versa, there's no leak from the head gasket. I've tried increasing the oil change frequency and using CD2. Thanks a bunch. Scott |
#3
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I have seen some overheated engines where the oil pump windage tray (plastic) has melted and clogs the pickup screen creating a low oil pressure situation and eventual engine failure. Looks like this http://vwdoc1.tripod.com/personal/in...1.8_engine.jpg So check that oil pressure NOW! -- later, dave (One out of many daves) "SBD" <sbd (AT) cox (DOT) net> wrote in message news:GJ71i.138650$mJ1.92136 (AT) newsfe22 (DOT) lga... My daughter's 97 Jetta 2.0 with 110k miles was over heated pretty good a little under a year ago. At that point it started ticking. It sounds like just one thing, either the intake or exhaust valve/lifter/rod on just one cylinder. It has progressively worsened from a tick to a whack. So, is this typical behavior if it were just a lifter? Do they get progressively worse? Or, is it more likely some other melted part: rod, valve, etc. If only a lifter, I think I could manage that job, although advice is graciously accepted. There are no other symptoms from the overheating -- it doesn't burn oil at an increased rate, there's no oil in the coolant or vice versa, there's no leak from the head gasket. I've tried increasing the oil change frequency and using CD2. Thanks a bunch. Scott |
#4
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My daughter's 97 Jetta 2.0 with 110k miles was over heated pretty good a little under a year ago. At that point it started ticking. It sounds like just one thing, either the intake or exhaust valve/lifter/rod on just one cylinder. It has progressively worsened from a tick to a whack. So, is this typical behavior if it were just a lifter? Do they get progressively worse? Or, is it more likely some other melted part: rod, valve, etc. If only a lifter, I think I could manage that job, although advice is graciously accepted. There are no other symptoms from the overheating -- it doesn't burn oil at an increased rate, there's no oil in the coolant or vice versa, there's no leak from the head gasket. I've tried increasing the oil change frequency and using CD2. Thanks a bunch. Scott |
#5
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SBD wrote: My daughter's 97 Jetta 2.0 with 110k miles was over heated pretty good a little under a year ago. At that point it started ticking. It sounds like just one thing, either the intake or exhaust valve/lifter/rod on just one cylinder. It has progressively worsened from a tick to a whack. So, is this typical behavior if it were just a lifter? Do they get progressively worse? Or, is it more likely some other melted part: rod, valve, etc. If only a lifter, I think I could manage that job, although advice is graciously accepted. There are no other symptoms from the overheating -- it doesn't burn oil at an increased rate, there's no oil in the coolant or vice versa, there's no leak from the head gasket. I've tried increasing the oil change frequency and using CD2. Thanks a bunch. Scott In addition to the other reply you've received, is it possible that you have a blown exhaust gasket and/or cracked manifold? Might want to try feeling around under the hood with the engine running and see if you feel little puffs of exhaust on your hand (careful, some of that stuff is hot...) nate -- replace "roosters" with "cox" to reply. http://members.cox.net/njnagel |
#6
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I have seen some overheated engines where the oil pump windage tray (plastic) has melted and clogs the pickup screen creating a low oil pressure situation and eventual engine failure. Looks like this http://vwdoc1.tripod.com/personal/in...1.8_engine.jpg So check that oil pressure NOW! -- later, dave (One out of many daves) "SBD" <sbd (AT) cox (DOT) net> wrote in message news:GJ71i.138650$mJ1.92136 (AT) newsfe22 (DOT) lga... My daughter's 97 Jetta 2.0 with 110k miles was over heated pretty good a little under a year ago. At that point it started ticking. It sounds like just one thing, either the intake or exhaust valve/lifter/rod on just one cylinder. It has progressively worsened from a tick to a whack. So, is this typical behavior if it were just a lifter? Do they get progressively worse? Or, is it more likely some other melted part: rod, valve, etc. If only a lifter, I think I could manage that job, although advice is graciously accepted. There are no other symptoms from the overheating -- it doesn't burn oil at an increased rate, there's no oil in the coolant or vice versa, there's no leak from the head gasket. I've tried increasing the oil change frequency and using CD2. Thanks a bunch. Scott |
#7
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Thanks for the advice and I will do that. But, wouldn't all the lifters be affected then? The sound is clearly one of eight. And wouldn't the oil pressure light come on? Scott |
#8
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Yes I too would think that more than one lifter should be affected if the oil pressure was low. Yes that light may come on when the oil pressure is way too low, but at what level and what rpm? If the pickup is partially blocked by a melted windage tray then the oil pressure may only attain a certain pressure and volume and stay that way throughout the rpm level of the engine. So if it is 10 psi at idle with X pints per minute of volume, then it might not achieve 40 psi or XXX pints of volume at 3000 rpm. It may only stay at 10 psi with X pints per minutes at 3000 rpm = NOT GOOD! This may be enough to keep the oil light off though but is really not enough for the engine. If you listened and have determined that one lifter is bad then you can probably determine which lifter it is after you pull off the valve cover. Then that lifter will probably easily push down with a tool. To replace you simply and carefully (Bentley instructions) remove the camshaft and replace the lifter! Simple huh? lol Yeah there are some procedures on carefully loosening up the bolts on the camshaft along with reinstalling it. This is the most critical part of the job and it is not difficult if you wish to do it yourself. I am wondering why it is just one lifter and not more than one. Maybe just a fluke and a little dirt got inside of the lifter and made it a non-functioning lifter. Now it could also be weak valve springs! I have not seen this yet on a VW engine but I guess it is possible too. <g Cross that bridge if you come to it! I like to know why a part fails! <g -- later, dave (One out of many daves) "SBD" <sbd (AT) cox (DOT) net> wrote in message news:W791i.138705$mJ1.105231 (AT) newsfe22 (DOT) lga... Thanks for the advice and I will do that. But, wouldn't all the lifters be affected then? The sound is clearly one of eight. And wouldn't the oil pressure light come on? Scott |
#9
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I thought all owners immediately shut the engine off when the RED lamp has been flashing for the last 50 miles?(lol) |
#10
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Hmmm. Thanks; Ill check. But, I don't think so. Different sound. This is top end I think. I'd hate to open it up and find out it's not lifters. Do they typically fail incrementally or at once? I'm not sure I'd tackle a head myself. |
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