Question about 2009 Hyundai Tucson

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Have a Hyundai Tuson. Worn out cam shaft gear after 107000klms. Rockers worn, cross heads worn. Cam shaft marked a lobe. Can these cams be ground or will you have lifter problems.

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If all these parts have wear marks then all the components will have to be replaced with new.you can have the cam reground but its probably cheaper and quicker to replace with new by the time you find a place to weld regrind the lobes and get the part back and hope it won`t give you a problem,so you don`t have to tear down again.

Posted on May 21, 2011

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What caused these gashes on my cam shafts it's a BMW 325i Is the car salvage or is it gone?


exactly what are we looking at
if it is the score lines in the cams, that will be normal for a running part running on a stationary cam follower
if it is the 2 marks between the cam lobes , there is nothing to worry about
cam shafts are made in a hammer process to compress the grain of the shaft and them ground for the lobes and bearings
those two marks are manufacturing imperfections and are of no consequence

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Have a ticking noise coming from inside engine,mechanic thinks its probably a worn canshaft 170000kms


the noise is most likely from worn hydraulic lifters rather than cam shaft
the key is your statement that the noise is worse when starting up
Cam shaft noise will be constant with rpms but lifter noise will decrease as the oil pressure builds up
At the klms you state , it is time for a hydraulic lifters set to be removed and have a leak down test done as they will be showing signs of wear
Find an accredited service shop that specializes in your make of car , have the noise properly diagnosed and get a quote for repairs

Mar 02, 2016 | Cars & Trucks

1 Answer

I have a 2000 polaris sportsman335 and the camshaft lobe is flat seems the part has been discontinued any ideas on how to fix or where to get the part thanks


the camshaft lobe is part of the cam shaft so if it is worn down then you need a new cam shaft
I would check with the service agent as I seriously doubt that cam shafts would be discontinued items
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Sep 06, 2015 | Cars & Trucks

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How to disquinguish the intake cam from the exhaust cam,,mine got mixed up while doing a headgasket job .


the cam shaft may be identifiable but I doubt it as the lobes will be all the same .It may take a trial fitting of the cam shaft to determine which is which. Place the no 1 piston on TDC and install the cam in the exhaust side of the head. position a the no 1 piston cam lobe in the just closing position. Check where the timing mark will be in this position ( the engine make and sized would have been an enormous help here as the key position or timing mark on the gear would have revealed what cam it was). Place the other cam in the position where the no1 cam lobe is just opening.. This is called valve overlap and from the positioning of the timing marks will show if the cams should be interchanged . The marks will either both face down, face each other or face upwards. If they face out wards away from each other then interchange the the cams and if that makes the marks face each other then it may be right. Another way ( probably simpler will be to put a cam in place and the cam lobes will be directly in line with the rockers over the valves or directly over the valves. Workshop manuals are a big help when doing this work.

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To readjust the cam timing loosen of the valve rockers so that the valves will not move as the cams are turned.. Set the crankshaft on TDC no 1 piston. This will make the mark on the crank sprocket line up with a mark on the housing. The cam shaft marks are to ne facing each other with the "up" marks facing up. Loosen of the adjuster idler and use an allen key to lever the pulley away from the belt. Fit belt and let tensioner off Ensure tensioner spring is in line with the notch. Repeat procedure to get it there.. The valves will now be timed . replace the rockers and adjust as required . The problem that you had is that there was load on the cam lobes from incorrect positioning of the cam shafts and the shaft turns until the load was equal between two lobes.. There is every possibility that there will be bent valves as it is an interference motor.

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1 Answer

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1 Answer

Rapping noice, sounds like a lifter...how hard is it to fix without going to garage


do to the complexity of the 4.2 dohc engine i am pretty sure you will find that you have a worn lobe on the cam shaft you will need to remove the intake and exhaust manifolds and remove the cam gears supporting the cam chain make sure the engine is on number on compression before removeing it once the manifolds are removed you can remove the valve cover to inspect the cam lobes and valve height

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1 Answer

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No such thing as a 'cam follower' on any engines. Need clarification from someone who knows what they're talking about. Common misconception about 'cam followers'.. they simply don't exist -- cam lobes push against lifters (or rockers), in turn (rockers)lifters push against valve stems, valves then 'open' or 'close' accordingly. Perhaps you're describing valve/tappet noise?... if so, is the engine design of 'solid' or 'hydraulic' lifters?..If Solid, then overhaul, is hydraulic, then perhaps 'Z-Max' treatment will help.

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1 Answer

My RV cam broke in my jeep.


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1 Answer

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