i was doing some maintenance on the 16v such as a new head gasket and timing belt. i sent the perfectly fine head out to the shop to have it resurfaced and now it has a lifter like tick, I suspect that this is just a loose timing chain. and it idles like is has a crazy cam. i think that they set the cams incorrectly. what do you guys think?
machine shop screwed me...
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Re: machine shop screwed me... (pxahxc)
pull the valve cover and shck the cam timing. then do a compression check after to see if that ticking is the valves and pistons tapping eachother
pull the valve cover and shck the cam timing. then do a compression check after to see if that ticking is the valves and pistons tapping eachother
Re: machine shop screwed me... (weeblebiker)
Not sure how checking compression would tell you if the valves and pistons were hitting, if they were i think you'd have more problems then a little bit of ticking.
Did they put new lifters in for you? If they did then they might not have soaked them in oil for long enough or at all before installing them. Check your oil pressure also cause if its too low then the lifters will start ticking like its going out of style. Also yes check that the cams are ligned up properly and that there isn't any slack in the cam chain, i got slack in mine and my car idles like sh*t and it's loud so i'll be changing that asap. G/L with the car hope you find out what the problem is.
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| Quote, originally posted by weeblebiker » |
| pull the valve cover and shck the cam timing. then do a compression check after to see if that ticking is the valves and pistons tapping eachother |
Not sure how checking compression would tell you if the valves and pistons were hitting, if they were i think you'd have more problems then a little bit of ticking.
Did they put new lifters in for you? If they did then they might not have soaked them in oil for long enough or at all before installing them. Check your oil pressure also cause if its too low then the lifters will start ticking like its going out of style. Also yes check that the cams are ligned up properly and that there isn't any slack in the cam chain, i got slack in mine and my car idles like sh*t and it's loud so i'll be changing that asap. G/L with the car hope you find out what the problem is.
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Re: machine shop screwed me... (whiteriot)
If the cam timing is off, generally you get lower compression readings.
| Quote, originally posted by whiteriot » |
Not sure how checking compression would tell you if the valves and pistons were hitting, if they were i think you'd have more problems then a little bit of ticking. Did they put new lifters in for you? If they did then they might not have soaked them in oil for long enough or at all before installing them. Check your oil pressure also cause if its too low then the lifters will start ticking like its going out of style. Also yes check that the cams are ligned up properly and that there isn't any slack in the cam chain, i got slack in mine and my car idles like sh*t and it's loud so i'll be changing that asap. G/L with the car hope you find out what the problem is.
|
If the cam timing is off, generally you get lower compression readings.
Re: machine shop screwed me... (machschnelGTI)
but the 16v is an interference motor so if the timing was off would it smack the valves bending them, although i guess there would probably be a tiny bit of leeway with it.
| Quote, originally posted by machschnelGTI » |
If the cam timing is off, generally you get lower compression readings. |
but the 16v is an interference motor so if the timing was off would it smack the valves bending them, although i guess there would probably be a tiny bit of leeway with it.
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Re: machine shop screwed me... (whiteriot)
theres a couple teeth worth of fudge room
| Quote, originally posted by whiteriot » |
but the 16v is an interference motor so if the timing was off would it smack the valves bending them, although i guess there would probably be a tiny bit of leeway with it. |
theres a couple teeth worth of fudge room
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Re: machine shop screwed me... (whiteriot)
bent valves don't hold compression
| Quote, originally posted by whiteriot » |
but the 16v is an interference motor so if the timing was off would it smack the valves bending them, although i guess there would probably be a tiny bit of leeway with it. |
bent valves don't hold compression
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Re: machine shop screwed me... (SvenRasta)
Sounds like you need to just let the lifters pump up if they assembled the head the lifters need to be bled down ...Thus, after they need to be pumped up,once again bleed down pump up bleed down pump up....
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NOW PUMP UP!!!!!!!!!!!!!!!
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Sounds like you need to just let the lifters pump up if they assembled the head the lifters need to be bled down ...Thus, after they need to be pumped up,once again bleed down pump up bleed down pump up....
NOW PUMP UP!!!!!!!!!!!!!!!
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Re: machine shop screwed me... (X K R O M X)
| Quote, originally posted by X K R O M X » |
| Sounds like you need to just let the lifters pump up |
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Re: machine shop screwed me... (pxahxc)
did you get pump up yet?
did you get pump up yet?
Re: machine shop screwed me... (X K R O M X)
this happened to me also. it ended up being the chain, and gears. the chain was hitting the top of the valve cover, thus making the noise. it is amazing how worn the gears get. they are easy to replace with a freezer
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this happened to me also. it ended up being the chain, and gears. the chain was hitting the top of the valve cover, thus making the noise. it is amazing how worn the gears get. they are easy to replace with a freezer
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Re: machine shop screwed me... (keinreis)
how does a freezer help?
I always have to use a hydraulic press.
| Quote, originally posted by keinreis » |
| this happened to me also. it ended up being the chain, and gears. the chain was hitting the top of the valve cover, thus making the noise. it is amazing how worn the gears get. they are easy to replace with a freezer
|
how does a freezer help?
I always have to use a hydraulic press.
Re: machine shop screwed me... (weeblebiker)
When things get cold, they get shrink to a certain degree. All the males present can attest to that.
So, get the cam cold (dry ice) and get the gear hot (propane torch) and things should seperate easily. Tried and true old timers trick; works like a charm.
When things get cold, they get shrink to a certain degree. All the males present can attest to that.
So, get the cam cold (dry ice) and get the gear hot (propane torch) and things should seperate easily. Tried and true old timers trick; works like a charm.
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