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post #1 of 18 (permalink) Old 07-20-2002, 01:29 PM Thread Starter
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Question knocking at startup

I sometimes abuse my Bird by letting her sit for a week at a time. When I go to start her up, I hear knocking for a second or two. It sounds like the oil isn't present at some parts for the first few seconds after start up. It sounds just like it does when you just changed the oil and strated the car for the first time.
Should I be concerned about this, or is it normal? The engine does not smoke, nor does it eat enough oil to be added between oil changes with just about 113k on it. Thanks.


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post #2 of 18 (permalink) Old 07-20-2002, 01:30 PM
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Do you run a Fram filter?

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post #3 of 18 (permalink) Old 07-20-2002, 01:34 PM Thread Starter
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Unhappy uh oh...

It's not Fram, but it's a no name. Could it be the problem?

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post #4 of 18 (permalink) Old 07-20-2002, 01:51 PM
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Get a motorcraft filter or something named other than Fram. That knock sounds like a drystart...definatly not good. When the knock happens...look at your oil gauge...it probably doesn't move while it's knocking and then once it goes up you'll hear the knocking stop.

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post #5 of 18 (permalink) Old 07-20-2002, 01:55 PM Thread Starter
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Thanks, will do.


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post #6 of 18 (permalink) Old 07-20-2002, 03:33 PM
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Hmm.

Very intersting, about a year ago I was running fram filters and I was getting a similar knock for about two seconds only right after I changed the oil, and put in a fresh filter. Now, I run motorcraft filters, and the knock is no longer there. Why would this be?

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post #7 of 18 (permalink) Old 07-20-2002, 03:52 PM
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There is talk of Drain back vakle issues with Fram

I use them with 10W40 Mobil and haven't heard "rattling or knocking" at cold start. Been using them for years just like Fords maybe it's loyality I don't know, maybe it's the fact that a Motocraft filter left me stranded in the middle of nowhere Arizona when the seam burst. Never had an issue with Frams will keep not having issues untill I do have one.
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post #8 of 18 (permalink) Old 07-20-2002, 04:24 PM
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problem is that Fram doesn't have an anti-drainback valve so dry starts will happen...period.
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post #9 of 18 (permalink) Old 07-21-2002, 01:20 AM
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All of them?

It depends on the type of Fram filter (which are made by Allied Signal), and while they do have an anti-drain valve on a lot, they are made rather cheaply and out of a nitrile rubber diaphragm which fails easily in cold weather. Infact you can simply look inside and tell if your filter has the valve. But as mentioned, even if it does, you aren't exactly safe.

I don't know how many different "levels" of filter they supply for the MN-12, but I've used Motorcraft and now Mobil One.

Fram has dropped off in terms of quality significantly. Avoid them.
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post #10 of 18 (permalink) Old 07-21-2002, 10:07 AM
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I'm using a K&N and I have the same problem. After the car sits overnight, it knocks just a little when I start it. Guess I won't use their oil filters anymore.

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post #11 of 18 (permalink) Old 07-21-2002, 10:49 AM
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Thats interesting about the k&n filters. I would never buy those to start with because they are over ten dollars each, right? I hear they filter a very small particle, but the last thing you want is knocking at startup.

I'm starting to like the motorcraft filter more and more, especially because I think it is the same price as the cheap fram is at walmart.

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post #12 of 18 (permalink) Old 07-21-2002, 03:48 PM
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Hey, anything for my bird, lol! I was experimenting, but I don't think the filter is worth the $$. I did pay a little over $10 for it. I guess you live and learn.

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post #13 of 18 (permalink) Old 07-21-2002, 08:34 PM
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post #14 of 18 (permalink) Old 07-21-2002, 10:48 PM
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I use a puralator...

I dont know if i spelled that right but they have the anti drain back.I used that on my Mark and never had the knock on start up and the 32 valve is more known then the 16 valve for knock on start up.You can get them at Discount,AutoZone and I think Pep-Boys.Not sure though.
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post #15 of 18 (permalink) Old 07-22-2002, 01:51 AM
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Quote:
Originally posted by seabass
problem is that Fram doesn't have an anti-drainback valve so dry starts will happen...period.
Are NAPA filters like this also?

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post #16 of 18 (permalink) Old 07-24-2002, 06:54 PM
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Talking

My car knocks/ rattles whatever when it sits for more than a couple hours....whether or not I have a motorcraft filter or Fram Extra guard....(both of these had anti-drainback valves) Any other ideas on what it could be?
-Rob
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post #17 of 18 (permalink) Old 07-25-2002, 02:33 AM
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knock at startup

My 96 t-bird did that when I first got it...I couldnt ever figure out what it was caused by, and it would only do it after the car sat all night...I changed the battery a couple months after I got it, and not only did the car fire right up a lot quicker then before, but the startup knock was gone, and never re-appeared for the rest of the time I owned the car. Could it have been the starter due to the engine not turning over very quickly due to a almost dead battery? Possibly, but I'm not sure...Try a fresh battery, worked for me.

Hope this helps

Earl

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post #18 of 18 (permalink) Old 07-26-2002, 09:50 PM
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has any one considered a cloged pick up or bad oil pump?
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