 Engine Knocking, Help |
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| Engine Knocking, Help |
 Apr 24 2005, 04:05 PM
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#1
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Newbie Group: Members Posts: 17 Joined: 17-April 05 Member No.: 4,468 Status:  Location: San Jose, California, USA Drives: 1992 Volvo 240  |
My 1992 Volvo 240 is having tons of engine knocking. Any time I press the gas, I hear my engine knocking. The engine is the stock that comes with the car (4 cyl, inline). So I got two questions:
1. Will changing from 87 to 91 octane actually make the difference? 2. I suspect a greater problem than the octane rating since this has been a growing problem. What would cause such a problem and how much would it cost to fix it? (Is it worth it aswell?) -Paul |
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Apr 25 2005, 06:40 AM
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#2
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 Veteran  Group: Super Mod Posts: 5,794 Joined: 5-November 04 Member No.: 1,295 Status: Location: Fl. Drives: Mustang,1995 Yellow T5-R,1996 850 Trubo |
If it is a knocking noise then most likely it is a bad bearing in the bottom of the engine.It would be cheaper to buy and install a used engine from a salvage yard.
The only other thing to look at that might cause a little knocking noise is the lower crank pulley.Sometimes the rubber comes out from between the 2 pulleys and will make a knocking noise. |
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May 2 2005, 07:23 AM
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#3
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 Expert Group: Super Mod Posts: 747 Joined: 2-May 05 Member No.: 4,718 Status: Location: Wonga Beach, Qld, Australia Drives: Volvo 1976 264 |
QUOTE(propaul80 @ Apr 25 2005, 07:05 AM) My 1992 Volvo 240 is having tons of engine knocking. Any time I press the gas, I hear my engine knocking. The engine is the stock that comes with the car (4 cyl, inline). So I got two questions: 1. Will changing from 87 to 91 octane actually make the difference? 2. I suspect a greater problem than the octane rating since this has been a growing problem. What would cause such a problem and how much would it cost to fix it? (Is it worth it aswell?) -Paul [right][snapback]7105[/snapback][/right] well it depends on the noise - if you mean pinging or pinking it is an octane/gummed up problem, ie a coked up engine has less room in the chamber SO effectively increases compression ratio so the classical pinging [which is like a rattle] but have you tried 91 octane??? I am surprised to hear you would even think of 87 but could be different specs in different countries |
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