knock on start up
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Freshman User
Joined: Jul 2003
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knock on start up
i have a new f250 and the engine makes a knock as the key is turned over.....it only occurs with the initial crank of the engine and is gone immediately.....is this a timing issue?? thanks for any feedback you can provide
jn
jn
Senior User
Joined: Oct 2002
Posts: 437
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From: Fayetteville (Atlanta) GA
knock on start up
Assume a 2003 V-10. Mileage ? Hot/Cold Weather ? Weight and brand name of oil ? Brand name of oil filter ?
Timing on start up....probably not.
Knocking while climbing a steep hill, or accelerating,........ timing Yep
Mark
Timing on start up....probably not.
Knocking while climbing a steep hill, or accelerating,........ timing Yep
Mark
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Freshman User
Joined: Jul 2003
Posts: 34
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knock on start up
i only have 1000 miles on the truck and live in southern california, so etxreme temps hot or cold arent the issue. it doeasnt do it at all while driving, just the initial start up. i have yet to change the oil since the truck is brand new. thanks for the feedback
Posting Guru
Joined: Mar 2002
Posts: 2,245
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From: Vancouver Wash USA
knock on start up
Originally posted by SouthBay420
i have a new f250 and the engine makes a knock as the key is turned over.....it only occurs with the initial crank of the engine and is gone immediately.....is this a timing issue?? thanks for any feedback you can provide
jn
i have a new f250 and the engine makes a knock as the key is turned over.....it only occurs with the initial crank of the engine and is gone immediately.....is this a timing issue?? thanks for any feedback you can provide
jn
Hope this helps.
Posting Guru
Joined: Mar 2002
Posts: 2,245
Likes: 16
From: Vancouver Wash USA
knock on start up
Originally posted by SouthBay420
sorry it took so long for me to respond...have been away...it is definitely not a lifter....
sorry it took so long for me to respond...have been away...it is definitely not a lifter....
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Post Fiend
Joined: Jun 2003
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From: NE Texas
knock on start up
Remember the wrist pin "slap" we once had in the old FE motors? Imagine how that "slap" would sound in the aluminum blocks today. My dad bought a '67 F100 with around 10K miles on it back in the latter part of '68. It had a 352 engine in it and it knocked until we overhauled it with over 200K on it. Every now and then that V10 slap I have sounds like the old wrist pin knock, but it fortunately goes away after a few seconds. Whether it's a "piston slap" or not I have no idea. Whatever it is might not sound as bad if it was inside on old cast iron block....maybe.
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Post Fiend
Joined: Jun 2003
Posts: 5,643
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From: NE Texas
knock on start up
Originally posted by V-104Me
Big Orn,
The V-10 is Cast Iron heads are aluminum.
Big Orn,
The V-10 is Cast Iron heads are aluminum.
Still applies - I don't think that the "slap" would sound as bad if it was in one of the "old cast iron" blocks as compared to the "deep-throated" Titan designs where the hollow under the TB amplifies it.
Getting Sumtimerz I guess.
Posting Guru
Joined: Mar 2002
Posts: 2,245
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From: Vancouver Wash USA
knock on start up
Originally posted by Big Orn
Remember the wrist pin "slap" we once had in the old FE motors? Imagine how that "slap" would sound in the aluminum blocks today. My dad bought a '67 F100 with around 10K miles on it back in the latter part of '68. It had a 352 engine in it and it knocked until we overhauled it with over 200K on it. Every now and then that V10 slap I have sounds like the old wrist pin knock, but it fortunately goes away after a few seconds. Whether it's a "piston slap" or not I have no idea. Whatever it is might not sound as bad if it was inside on old cast iron block....maybe.
Remember the wrist pin "slap" we once had in the old FE motors? Imagine how that "slap" would sound in the aluminum blocks today. My dad bought a '67 F100 with around 10K miles on it back in the latter part of '68. It had a 352 engine in it and it knocked until we overhauled it with over 200K on it. Every now and then that V10 slap I have sounds like the old wrist pin knock, but it fortunately goes away after a few seconds. Whether it's a "piston slap" or not I have no idea. Whatever it is might not sound as bad if it was inside on old cast iron block....maybe.
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