Question about 2000 Renault 181
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Posted on Jan 02, 2017
The easiest way to test this is to carry out a compression test. This test will determine if any valves are bent. The test is very easy to carry out. 1.obtain a compression tester. 2. remove all spark plugs. 3. screw tester into spark plug hole. 4. with your foot on the accelarator, crank engine. 5. read the tester reading and write it down. eg. cyl 1 175psi cyl.2 170psi etc. if you have a bent valve one cylinder will be very low compared to the rest.
Posted on Dec 29, 2008
If you are doing this job yourself, check your pistons. Valve interference can cause small "eyebrow" contact marks on the piston tops. If these have any sharp marks where material was "pushed" by a valve, you need to use light sandpaper toi remove them, otherwise they can glow as cylinder temperature increased while running and can give you a pre-ignition problem when the job is finished.
If only a few valves appear to be bent, you should have all of them checked...even one thousandth of an inch bend can and will cause the valve to leak and burn. Any bent valves should also have the guides checked for damage. Don't forget to replace stem seals as long as you have the head apart...most become brittle with use and need changing. If you have a good machineist, he will know what to do!
good luck with your car!!
Posted on May 24, 2009
nO! dont get scammed they messed up and had the timing off and it fired your valves off at the wrong time and bent them dont take it to anyone else ...take it to the manufactures and let them know what happened and i would get in touch with the BBB.... see your timing belt turns your camshaft which turns your pistons up and down now if you timing is off your piston will go up at the wrong time and force all that combustion back at your valves which are made up of light metal and then they bend .....call the garage you went to and let them know that it was there fault and you want it fixed ......this really makes me mad being an mechanic myself. I hope this helps you a little.
Posted on Oct 30, 2009
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I am a gm tech and I would actually recommend a new engine from wrecking yard. I have had two of these that had the head replaced and vibrated due to a slightly bent rod. If you decide to put it together, just go to your local dealer, and ask if you can borrow the special timing belt adjuster tool. The adjustor/tensioner is the water pump. I would replace it and the idler pulleys also I have had them fail as well. If they will loan you the tool, they should print a procedure for replacement out also, at least i do for my customers.
Posted on Dec 11, 2009
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