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| msman |
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g'day
i gotta el fairmont dual fuel, it has a slight rattling noise when at working temp not when cold, it started a few days sfter i changed the oil, penzoil gas 15/40 and valvoline oil filter, i've noticed it is louder when on petrol than on gas. anyone got an idea thanks
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| rock |
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Age: 47 Posts: 5 Joined: 13th Nov 2004 Ride: ef fairmont Location: Victoria, Northern Suburbs |
maybe lifters mate
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| madmax |
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Have you always used penzoil gas 15/40? maybe changing oil grade has brought on a lifter noise.
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| msman |
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i just bought this car abt a month ago, and before that it was always serviced by a ford dealer, the bloke gave all the reciepts, i assumed ford would be using a 15/40 oil, should i try another oil.
used penzoil gas 15/40 as we use it in the au taxi which has 800,000 k's on it and still very quiet and smooth engine.
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| msman |
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btw it is a rattle noise
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| madmax |
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I would still point to a lifter noise, even though ford specs maybe 10w-40 as an engine gets older a thicker oil may be required to maintain pressure and lubrication through larger tolerances. If the engine was using a thicker oil say 20w-50 before, then changing to a thinner oil may bring on a lifter noise.
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| bowsaw |
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Not pre detonation is it?
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| msman |
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i will try a thicker oil, is 20/50 the way to go or other spec, not good with this stuff.
what is pre detenation?
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| madmax |
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I use valvolene XLD 20w-50, have done for years in both EA and EL never had a problem with it.
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| msman |
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just put in penrite gas 20/60 and a new filter, noise seems to be less but still there will it take time to settle, i don't think it would.
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| Shugg |
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Hope its not your timing chain. Maybe the tensioners s**t itself, Giving you a chain type rattle. You will know when you get 6 dents in your bonnet, when your chain snaps and your cam siezes!
Shugg |
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| JOSE |
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Shugg wrote: Hope its not your timing chain. Maybe the tensioners s**t itself, Giving you a chain type rattle. You will know when you get 6 dents in your bonnet, when your chain snaps and your cam siezes!
Shugg LOL, damn, i better hurry up and get my noisy timing chain fixed. Sometimes its not quite that spectacular, only the rocker arms snap off.
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| JOSE |
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Shugg wrote: Hope its not your timing chain. Maybe the tensioners s**t itself, Giving you a chain type rattle. You will know when you get 6 dents in your bonnet, when your chain snaps and your cam siezes!
Shugg LOL, damn, i better hurry up and get my noisy timing chain fixed. Sometimes its not quite that spectacular, only the rocker arms snap off.
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
msman wrote: i will try a thicker oil, is 20/50 the way to go or other spec, not good with this stuff.
what is pre detenation? pre detonation is nothing. pre ignition is sponatiuos combutsion befor the spark plug fires and has a ratly sound like a can of marbles being shaken. detonation is sponatiuos combutsion after the spark plug fires and has a sharp metal on metal knocking sound |
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| Clint72 |
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Mine goes knock knock knock only whren its hot :S
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