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351 Windsor loud tick

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Old Dec 22, 2015 | 09:59 AM
  #1  
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351 Windsor loud tick

Just got the truck a month ago and since the first day I got it it's had this tick vehind it. It's all times regardless of rpms. Manifold tick? Or valve train? It's going into the shop next week for a full exhaust so I'll have the gaskets checked, it is just an obnoxious noise to listen to from such a nice truck.
 
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Old Dec 22, 2015 | 10:20 AM
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Could be manifold crack, air injection tube(s) crack or a host of others. A thorough inspection will reveal the root cause(s).
 
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Old Dec 22, 2015 | 01:17 PM
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Originally Posted by rla2005
Could be manifold crack, air injection tube(s) crack or a host of others. A thorough inspection will reveal the root cause(s).
+1, good chance it's the exhaust. At least that's the best case scenario...
 
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Old Dec 22, 2015 | 06:08 PM
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take a short piece of garden hose or some kind of tubing and listen through it check by manifolds ,valve covers etc
 
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Old Dec 22, 2015 | 06:47 PM
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Originally Posted by chrismd188
take a short piece of garden hose or some kind of tubing and listen through it check by manifolds ,valve covers etc
Bingo that is how Old Schooler's do it. Glad to see somebody remembers these things.
 
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Old Dec 22, 2015 | 07:04 PM
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Sometimes I remember ,sometimes I jump to conclusions .I had an old f150 with a straight six that started ticking real bad so i figured rockers might need adjusted tore everything down just to find out I was about 4 quarts low on oil
 
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Old Dec 22, 2015 | 07:21 PM
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Originally Posted by chrismd188
Sometimes I remember ,sometimes I jump to conclusions .I had an old f150 with a straight six that started ticking real bad so i figured rockers might need adjusted tore everything down just to find out I was about 4 quarts low on oil
Ouch.
 
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Old Dec 22, 2015 | 08:14 PM
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Didn't hurt the motor
filled it back up and it ran great and didn't tick at all ,the 300 is probably the toughest motor ever made
 
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Old Dec 22, 2015 | 08:37 PM
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Originally Posted by chrismd188
Didn't hurt the motor
filled it back up and it ran great and didn't tick at all ,the 300 is probably the toughest motor ever made
My Dad had a 1971 F100 with the straight 6. Dang thing would shake any carb you installed on it to death. I miss that old truck.
----------------------------------------------------
Back to the Tick Issue that is the best method ever is the piece of hose or plastic pipe to your ear and go listening.
 
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Old Dec 23, 2015 | 08:04 AM
  #10  
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Most likely a cracked or warped manifold. Our 351 has had a tick for years. Went away for while after changing the manifolds, but it eventually started to tick again.
 
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Old Dec 23, 2015 | 11:15 AM
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I changed the manifolds on my 91 f150 with a 302 for long tube headers,when I took the stock manifolds off both sides were cracked in half.couldn't even see a crack in them while they were on
 
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Old Dec 23, 2015 | 11:18 AM
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Is there to much smog junk to replace with aftermarket headers? Just asking.
 
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Old Dec 23, 2015 | 11:31 AM
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mines a 1991 f150 4x4 302 auto
The only thing I did was removed stock manifolds bolted headers on and tied the plug for the o2 sensor up
The only thing I've done with the smog system is put a block off plated where the egr meets the tb.
the truck has 35's and 4.56 gears and I get around 20mpg
 
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Old Dec 23, 2015 | 11:37 AM
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Originally Posted by chrismd188
mines a 1991 f150 4x4 302 auto
The only thing I did was removed stock manifolds bolted headers on and tied the plug for the o2 sensor up
The only thing I've done with the smog system is put a block off plated where the egr meets the tb.
the truck has 35's and 4.56 gears and I get around 20mpg
BINGO!!!
 
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Old Dec 23, 2015 | 11:40 AM
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Our 89 F250 351 has the same tick I have traced it to the manifolds also. I just haven't fixed it because it is just a ranch/work truck so it doesn't ever go more then 10 miles a month now. If it was one of our 5 regular driven (or soon to be regular driven) it would have had headers on it by now (except my 92 300 and brother's 91 300).
Trav
 
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