Strange Sound

cakemashin' · 11-12-2008, 08:22 PM

whenever my car is cold and i start it, it makes this really really fast knocking sound and it only lasts for literally one second and then it goes away. it won't do it for the rest of the day. usually just when i haven't driven it within several hours. could this have something to do with oil or some kind of oil issue?

TomsMR2 · 11-13-2008, 11:02 PM

cold start knock.. its pretty normal, its just the oil getting to your engine.

unless you're running a fram filter.. then thats the sound of your engine being damaged.

cakemashin' · 11-15-2008, 11:03 AM

ok. so it's nothing to worry about?? cuz i don't notice other cars doing it really... and i use either toyota or mobil 1 oil filters

TomsMR2 · 11-16-2008, 04:32 AM

all cars do it, you just hear it less on some. the mr2 engine isnt well insulated at all, and older toyota engines were built pretty loose (more noise).

the noise should coincide with the oil light turning off.. as long as that light keeps turning off quickly, you're in good shape!

mr29180 · 11-16-2008, 05:37 AM

I do have the same problem.. But mine will stay until it's warm up. And everytime I start my 2 ( even I drove my car 2 hours or more ) I still here a knock.. Keep on mind my meter read 222k. Guys is that my valves?? Can I adjust them?? Need help thanx

cakemashin' · 11-16-2008, 11:07 AM

yesterday i got in to start it and the knock was REALLY loud and a lot more violent than usual... but i haven't started the car in a day or so and it has been pretty cold outside. it was the first time i have ever heard it that loud. but the knock went away in a couple of seconds. could that more violent knock have been caused by it being cold for an extended amount of time and that it hasn't been started in a day??

sideshowauzz · 06-18-2009, 06:42 PM

I've had the same problem the past few weeks even since I got back from my road trip. It started out as a minor vibration and its escalated to a hard knock and it takes a few turns to get it started. She runs fine once she's warmed up, and it feels like theirs a little more power driving it now SO i'm guessing the timing is advanced too far.

I'm at 112K miles with almost original everything, so I know my belts are over due. She was running so great the past 60k..no problems what so ever.

Ben · 06-19-2009, 02:48 AM

Don't rule out rod knock

11-12-2008, 08:22 PM	#1 (permalink)
cakemashin' Cage Fighter Join Date: Sep 2008 Location: Hempstead, TX Posts: 130 Thanks: 5 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	Strange Sound whenever my car is cold and i start it, it makes this really really fast knocking sound and it only lasts for literally one second and then it goes away. it won't do it for the rest of the day. usually just when i haven't driven it within several hours. could this have something to do with oil or some kind of oil issue?

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11-13-2008, 11:02 PM	#2 (permalink)
TomsMR2 Formerly Tom Brokaw Join Date: Feb 2005 Location: Bay Area Posts: 2,497 Thanks: 8 Thanked 233 Times in 168 Posts Blog Entries: 1 iTrader Rating: (0/0% )	cold start knock.. its pretty normal, its just the oil getting to your engine. unless you're running a fram filter.. then thats the sound of your engine being damaged.

11-15-2008, 11:03 AM	#3 (permalink)
cakemashin' Cage Fighter Join Date: Sep 2008 Location: Hempstead, TX Posts: 130 Thanks: 5 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	ok. so it's nothing to worry about?? cuz i don't notice other cars doing it really... and i use either toyota or mobil 1 oil filters

11-16-2008, 04:32 AM	#4 (permalink)
TomsMR2 Formerly Tom Brokaw Join Date: Feb 2005 Location: Bay Area Posts: 2,497 Thanks: 8 Thanked 233 Times in 168 Posts Blog Entries: 1 iTrader Rating: (0/0% )	all cars do it, you just hear it less on some. the mr2 engine isnt well insulated at all, and older toyota engines were built pretty loose (more noise). the noise should coincide with the oil light turning off.. as long as that light keeps turning off quickly, you're in good shape!

11-16-2008, 05:37 AM	#5 (permalink)
mr29180 Cage fighter Join Date: Mar 2008 Location: Frisco (bay area) Posts: 870 Thanks: 1 Thanked 29 Times in 25 Posts iTrader Rating: (0/0% )	I do have the same problem.. But mine will stay until it's warm up. And everytime I start my 2 ( even I drove my car 2 hours or more ) I still here a knock.. Keep on mind my meter read 222k. Guys is that my valves?? Can I adjust them?? Need help thanx

11-16-2008, 11:07 AM	#6 (permalink)
cakemashin' Cage Fighter Join Date: Sep 2008 Location: Hempstead, TX Posts: 130 Thanks: 5 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	yesterday i got in to start it and the knock was REALLY loud and a lot more violent than usual... but i haven't started the car in a day or so and it has been pretty cold outside. it was the first time i have ever heard it that loud. but the knock went away in a couple of seconds. could that more violent knock have been caused by it being cold for an extended amount of time and that it hasn't been started in a day??

06-18-2009, 06:42 PM	#7 (permalink)
sideshowauzz No Skills Join Date: May 2006 Location: seattle, WA Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	I've had the same problem the past few weeks even since I got back from my road trip. It started out as a minor vibration and its escalated to a hard knock and it takes a few turns to get it started. She runs fine once she's warmed up, and it feels like theirs a little more power driving it now SO i'm guessing the timing is advanced too far. I'm at 112K miles with almost original everything, so I know my belts are over due. She was running so great the past 60k..no problems what so ever.

06-19-2009, 02:48 AM	#8 (permalink)
Ben Same In The End Join Date: Aug 2006 Location: Oceanside, CA / Reno, NV Posts: 3,927 Thanks: 18 Thanked 276 Times in 258 Posts My Google Map iTrader Rating: (11/100% )	Don't rule out rod knock