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09-17-2009, 07:48 AM | #1 |
Drives: Yaris 1.0 `02 year Join Date: Sep 2009
Location: Macedonia
Posts: 6
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Strange knocking in Engine :(
(STRANGE KNOCKING) Hi all,
Could someone guide me, I have Yaris 2002 1.0 VVT-i I use LPG sistem, Question: After driving for 30 min or more, until the engine heat`s up, than in idle i hear some knocking noise, soon as i give more gas the knocking is gone, it sounds like some nice diesel car (just a little knocking but not usual for petrol cars) I have chaked the valves at the service, they are OK, i have change the oil , but its all the same. Yaris has 77.000 km, Can it be the Chain Drive??? And on what km/mile has to be changed? Thank you all |
09-17-2009, 09:13 AM | #2 |
Drives: 2009 Base Hatch 2 Dr Auto Join Date: Dec 2008
Location: nj
Posts: 4,790
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There is no specified time to change the timing chain and I really do not think yours is bad at only 77k km. Also the valves would not cause a knock. You say the engine is knocking at idle? But the knock goes away after accelerating the engine? And does this happen before the car warms up? Or after?
I wish we had that 1.0 liter engine here in the US! |
09-17-2009, 10:25 AM | #3 |
Drives: 09 Yaris 3 Dr White LB Join Date: Mar 2009
Location: PA
Posts: 432
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I think he is describing valve ticking, this is a tough fix on these cars with the mechanical valve setup. Is it coming from the top of the engine?
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09-17-2009, 01:32 PM | #4 |
Drives: 2009 Base Hatch 2 Dr Auto Join Date: Dec 2008
Location: nj
Posts: 4,790
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Yes I agree with regal if its a TICKING noise its probably the valve train and nothing to worry about...
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09-18-2009, 05:01 AM | #5 | |
Drives: Yaris 1.0 `02 year Join Date: Sep 2009
Location: Macedonia
Posts: 6
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Quote:
BTW: I have 1.0cc engine with 68HP with PRINSE LPG sistem instaled, before the LPG the consumption was 6.4 litres per 100 kilometers, with the LPG it has increase to 7.2 lit. od LPG. With 20 litres of LPG i get 540 kilometres in town, heavy traffic. Greatings. |
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09-18-2009, 05:10 AM | #6 |
Super Moderator
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Have you changed fuel brands by any chance? I've heard of this happening when changing octane levels.
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09-18-2009, 05:34 AM | #7 | |
Drives: Yaris 1.0 `02 year Join Date: Sep 2009
Location: Macedonia
Posts: 6
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Quote:
Tnx PS: Yes i have changed the fuel.....i think before the knocking apears.....from a cheaper suplier.....i just fill up the tank yesterday....33 liters of LPG, TK-421 tnx for the advice..i will try soon as i epty this tank. Last edited by IvanG; 09-18-2009 at 05:49 AM. |
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09-18-2009, 06:01 AM | #8 |
Super Moderator
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Well I sure hope that helps you out. Please update the thread when you have more info to share!
P.S. Welcome to YW!
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09-18-2009, 09:41 AM | #9 |
Drives: 2009 Base Hatch 2 Dr Auto Join Date: Dec 2008
Location: nj
Posts: 4,790
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You dont think the noise is caused by the LPG?
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09-18-2009, 12:45 PM | #10 |
Drives: Yaris 1.0 `02 year Join Date: Sep 2009
Location: Macedonia
Posts: 6
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I`m afraid it is......that will suck very much, i have instaled the top product on the market, with special bootle on the side (like infusion)
http://www.prinsautogas.com/en/products/valvecare/valvecare.html connected to the hmmm i dont know the right name (the top part of the valves, to keep them lubricated) in my language "SICOVI") i hope the valves are not damaged :((( |
09-28-2009, 08:06 AM | #11 |
Drives: Yaris 1.0 `02 year Join Date: Sep 2009
Location: Macedonia
Posts: 6
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The right RPM in Idle???
Hi friends...could some one tell me the right RPM for Yaris 1.0 2002 in idle?
Tnx |
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