A friend is letting me bring my supra by his work tomorrow to listen to it from underneath to pinpoint a knocking sound...and before I go, I had a question about my knock.
I'm afraid it's rod knock. However, another member thought he had RK and low and behold it was his clutch/flywheel...they were loose. can i check that on the W54 (n/a 5spd) just by removing some plates and taking a peak??
Here's the type of knock;
ONLY on warm starts, i hear the knock. hits about 6-8 times on average, then goes away, then i see the oil pressure start to rise. this all happens in a few seconds, and i dont know that it has anything to do with oil pressure.
the car starts smooth from a cold start!! It usually revvs nice and smooth all the way through 3500 rpm (i usually dont rev higher).
however, if i drive for a while, park it for at least 45minutes to as much as 2 hours and come back, it will do the knocking on startup again. It starts and comes to a low idle immediately rather than revving like on a cold start, so i figure that's part of why its so noticeable during a "warm" start...its not forced up past 1k RPM in the first second like when its cold.
anyone ever had this happen? My friend said that it would be weird for rod knock to do that when the engines still warm or hot... it will do it more when it's cold. I thought maybe its rod knock and its just the oil not getting to the bearings to hide it, but it doesn't make sense that it would knock on a warm start but if i let it sit for more time...overnight...it would go away... it doesnt make sense!
so frankly, I'm worried it might be rod knock, but it doesn't seem to have the right characteristics. prove me wrong? It feels rough between 2-3k RPM but it doesn't really knock..
i'll be listening it to it tomorrow, any tips for that are welcome but i'll probably figure it out. there will be an experienced mechanic there as well. so yeah if anyone has had this symptom and know whats going on i would appriciate any help.
i know RK has been posted to death but I dont remember reading any post about this type of knocking. its usually just when revving, which for me isn't that bad.
I'm afraid it's rod knock. However, another member thought he had RK and low and behold it was his clutch/flywheel...they were loose. can i check that on the W54 (n/a 5spd) just by removing some plates and taking a peak??
Here's the type of knock;
ONLY on warm starts, i hear the knock. hits about 6-8 times on average, then goes away, then i see the oil pressure start to rise. this all happens in a few seconds, and i dont know that it has anything to do with oil pressure.
the car starts smooth from a cold start!! It usually revvs nice and smooth all the way through 3500 rpm (i usually dont rev higher).
however, if i drive for a while, park it for at least 45minutes to as much as 2 hours and come back, it will do the knocking on startup again. It starts and comes to a low idle immediately rather than revving like on a cold start, so i figure that's part of why its so noticeable during a "warm" start...its not forced up past 1k RPM in the first second like when its cold.
anyone ever had this happen? My friend said that it would be weird for rod knock to do that when the engines still warm or hot... it will do it more when it's cold. I thought maybe its rod knock and its just the oil not getting to the bearings to hide it, but it doesn't make sense that it would knock on a warm start but if i let it sit for more time...overnight...it would go away... it doesnt make sense!
so frankly, I'm worried it might be rod knock, but it doesn't seem to have the right characteristics. prove me wrong? It feels rough between 2-3k RPM but it doesn't really knock..
i'll be listening it to it tomorrow, any tips for that are welcome but i'll probably figure it out. there will be an experienced mechanic there as well. so yeah if anyone has had this symptom and know whats going on i would appriciate any help.
i know RK has been posted to death but I dont remember reading any post about this type of knocking. its usually just when revving, which for me isn't that bad.