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98 dodge intrepid timing and valve issues
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irockthisjoint
New User
Apr 8, 2011, 2:36 PM
Post #1 of 8
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98 dodge intrepid timing and valve issues
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i have a 98 dodge intrepid 2.7L and i had a guy come over to help me replace the water pump and timing chain. after we took the timing chain off and replaced the water pump i noticed that he rotated the camshaft sprockets individually. it was rotating hard with a pop and clank type noise. i told him to stop and to leave. i got the new chain back on with all the marks on the chain and sprockets lined up according to the manual but now my question is "is there valve damage done since the sprockets were moved individually??? and if so how do i check??? please i need help so bad with this issue
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zmame
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/ Moderator
Apr 8, 2011, 2:50 PM
Post #2 of 8
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Re: 98 dodge intrepid timing and valve issues
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you will need to do a leak down test. Put the cylinder in question at TDC on compression stroke and listen for a air leak.. a proper leak down tester will show at what rate it's dropping. You may be able to get one from auto parts store borrow a tool program.
please don't double post.
(This post was edited by zmame on Apr 8, 2011, 2:51 PM)
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irockthisjoint
New User
Apr 8, 2011, 2:58 PM
Post #3 of 8
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Re: 98 dodge intrepid timing and valve issues
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well i guess all the cylinders are in question. i guess the real question is "by turning both camshafts without turning the crankshaft will that cause valve or piston damage??? when the timing chain is back on and i turn the crankshaft bolt everything moves freely. im so confused
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zmame
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Apr 8, 2011, 3:11 PM
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Re: 98 dodge intrepid timing and valve issues
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I suppose it possible.. won't know till you do leak down or try and run it.. remember to crank by hand and re check your marks.
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irockthisjoint
New User
Apr 8, 2011, 3:16 PM
Post #5 of 8
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Re: 98 dodge intrepid timing and valve issues
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i turned the engine over by hand like 6 or 7 times and all the marks lined up correctly. there was no resistance when i was turning it over. went around very smooth. it seems to be right, but i didnt want to put it all back together if there is some kind of damage. i have never done a leak down test so i dont know how to do that. would like to learn though. another question is do the timing chains on the camshafts have to line up a certain way???
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 8, 2011, 3:18 PM
Post #6 of 8
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Re: 98 dodge intrepid timing and valve issues
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Yes, it will make contact with a piston if one or more are at TDC when the cams are rotated. The easiest way to find out is just see if it runs normal when your finished.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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techforfree
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Apr 9, 2011, 9:03 AM
Post #7 of 8
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Re: 98 dodge intrepid timing and valve issues
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Depends on if you feel you're a lucky man...lol...all kidding aside..pretty unlikely you caused any damage if the cam sprockets were only turned a tooth or 2..if the cam and the crank sprockets are now perfectly lined up ..and the chain tentioner was properly installed starting it up will tell you.But just a word of advise on those engines...take a real good look at the chain guides while you're in there..they were famous for cracking and causing the chain to jump off and ruining engines...good luck
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dougc426
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Apr 21, 2011, 6:17 PM
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Re: 98 dodge intrepid timing and valve issues
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you have to make sure that the timing marks on the cam chains are lined up,Or you will bend every valve in the motor.make sure you are at top dead center with crank gear on oil pump mark.then you will have to undo the exhaust side of each cam reset tensioners and put the timing marks back on the chain and on the cams,then proceed with timming chain marks.I worked at chrysler for 38 + years and repaired thousands of motors,And the 2.7 liter is really not that hard to work on..best...Doug
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