The car when at starting rave of 1.5 rpm makes a rattling noise like dry bearing. When you r going up a steep road, the rattling increases. On neutral there is no noise. After much investigation, we found the noise coming from the Cylinder head. So i did a full service changed all the plugs, changed oil & filter, gearbox oil, there was leakage on timing belt seal so we changed that. But the noise didn't disappear. Instead now there is a check engine light on. When we ran diagnostic on it, it states VVTI sensor error, camshaft. Now I am not able to buy the complete cyclinder head, but there is no heating, or any issues, except the noise. Where could this noise be coming from the cylinder head? What mechanics cause a rattling inside the cylinder head.
Sounds like a bad rod bearing, no cure except a rebuild. I assume you do know the difference between spark knock and bearing knock.
SOURCE: 2007 Escape oil pressure issue/oil pump
one thing to keep in mind that even though the vehicle is new you can still have major engine issues, because of the bearing material may have been bad at production.taking this in account any part on a vehicle can fail prematurely either because of poor insatllation or improper manufacturing. As far as oil filters are concerned bthe odds of mechanic installing the wrong filter are slim to none.the oil pressure sending unit only senses that here is oil flowing through it. it doesn't set the light off unless there is absolutely no pressure at all the only way to see the pressure is to have a gauge. oil prssure should be abot 45 psi at 2000 rpms. the only way a filter would effect oil pressure is if it was completely clogged. It would take a great deal of coolant in the oil to ruin a set of bearings and before that happens your vehicle would not run very well and you would notice a great amount of white smoke out the exaust. this would indicated either a blown head gasket.cracked head or a cracked block. you never mentioned what they found in the anaylasis of the oil. I presume that your vehicle is still under warrenty on the powertrain. I would suggest that you have the dealership check your oil pump out. every vehicle will have a small amount of metalic residue in the oil. large shavings and chunks of metal would be a worry. please rate this thanks.
SOURCE: 2005 Nissan Sentra 1.8s...SES light on. PLEASE HELP!
well if the head gasket has been replaced you shouldnt smeel any coolant. But have you check your coolant hoses???? for leaks or any coolant on the driveway, when your car has been sitting there overnight!???
SOURCE: Check engine light comes on. p0171 and p0351 codes found
From Lusty Kid:
I know the economy is bad, but change all of the plugs. Check your PCV Valve hose, 150 rottens them out allowing air to be sucked in, thus all kinds of codes.
Depending on mileage. Dismount the EGR valve and clean passages. If you are really good dismount the throtle position sensor body and clean out passages with Choke Cleaner., dismount where the EGR valves connects to the engine, clean out passages. Also check the hose thats behind this mounting to ensure is not clogged. If clogged clean it out. If not replace it. Is about 1.5 ft. long, connects to the PCV Valve Hose.
When is the last time you change your harness. Can't remember??? Replace it. Good Luck
SOURCE: 1996 Jeep GC - Diagnostic tool identified cylinder misfire
P0300 Code - Random Misfire
Symptoms
Symptoms may include:
Causes
A code P0300 may mean that one or more of the following has happened:
SOURCE: 2001 daewoo lanos check engine light
oil is non conductive so I doubt that's the problem, but the oil leak should be fixed to reduce problems down the road.
as for the misfire could be a couple things, fouled plug(s), a plug wire(s) that has cracks, or even valves that are not seating which i doubt from your explanation.
I would change your plugs and wires first, and fix oil leak. if this does not fix the issue there are other things going on.
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