Engine Noise looking for input!
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Engine Noise looking for input!
Alright guys I have a 2000 f-250 and here int he last couple of months it has developed a noise that I can't figure out. Here are the details it sounds like a valve or something in the top end it's a putt-putt-putt, and its in time with the engine, increases and decreases with speed. It sounds like its underneath the injector chatter that is normal. also when sitting and idleing it will occasionally shutter or miss. I have had the motor on the scanner and it shows no codes and the contrbution test comes back good. Iwas just wondering if anybody has had anything like this happen. I plan on taking it to a shop for a compression test here pretty quick. Any input would be appreciated. Thanks!
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Joined: Dec 2003
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From: Union Grove, Wisconsin
My truck kinda does the same thing lately. When cold, mine sounds normal. After driving 10 miles to work and backing into a parking stall, my engine sounds like a rod knock. But mine isn't timed to the engine. It's just every once in awhile. My knock is not very loud. I'm thinking that this is caused from the ULSD but that's just a guess. It seemed to start making the noise after I filled up at a different station than I normally do. I am running DK. If these are the same symtons as yours, maybe try changing fuel stattions.
Post Fiend
Joined: Sep 2006
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From: Sioux Falls, SD
Originally Posted by Danner81
Alright guys I have a 2000 f-250 and here int he last couple of months it has developed a noise that I can't figure out. Here are the details it sounds like a valve or something in the top end it's a putt-putt-putt, and its in time with the engine, increases and decreases with speed. It sounds like its underneath the injector chatter that is normal. also when sitting and idleing it will occasionally shutter or miss. I have had the motor on the scanner and it shows no codes and the contrbution test comes back good. Iwas just wondering if anybody has had anything like this happen. I plan on taking it to a shop for a compression test here pretty quick. Any input would be appreciated. Thanks!
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Details on setup (basics) afe stage 2, banks quick turbo upgrade, 4" exhaust turbo back, banks six gun, banks big hoss (120 hp), Hpop x-over, AIH delete, boost fooler, and tranny shift kit. I have not done anything to the fuel system yet, but that was the next thing on the list until this noise started. I was looking into getting a regulated return kit and pump back to tank kit from Diesel Innovations.
Fleet Owner
Joined: Jun 2004
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From: Rio Rico, AZ.
There's been a few stories of the roller lifters losing thier bearings on the roller. I would pull the valve covers and try and see what's going on.
I just recently wrote here on FTE about my experience on retorquing the rocker arm pedastals and fuel injector retainers back down.
My truck only has 75,000 miles on it and about half of the rocker pedastal bolts were slightly loose and all eight of the injector retainer bolts were loose by nearly 1/4 turn. I just last year replaced all of the injectors and torqued them down to spec with an inch pound torque wrench that I bought just to do that job.
One year later everything was loose and I am glad that I took the valve covers off to check.
Since then, everything has taken a different sound. Much tighter and more solid sounding engine.
It didn't sound bad before, it just sounds better now.
I just recently wrote here on FTE about my experience on retorquing the rocker arm pedastals and fuel injector retainers back down.
My truck only has 75,000 miles on it and about half of the rocker pedastal bolts were slightly loose and all eight of the injector retainer bolts were loose by nearly 1/4 turn. I just last year replaced all of the injectors and torqued them down to spec with an inch pound torque wrench that I bought just to do that job.
One year later everything was loose and I am glad that I took the valve covers off to check.
Since then, everything has taken a different sound. Much tighter and more solid sounding engine.
It didn't sound bad before, it just sounds better now.
Posting Guru
Joined: Sep 2006
Posts: 1,081
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From: Montana
Mine makes a knocking noise also and I found a thread from Ford saying it was low preasure for #8 injector. its usually when the motor is warm. When I run my Veggie oil it goes away, partly caues its getting lubbed better, but it is acutally filling hte rail from the other end, which is normally blocked off. if this is hte same thing, they call for low preasure and using a special #8 injector. I could be wrong, but I just go by what is told to me from folks that know much more than I.
Good luck
Good luck
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kwik thanks again for the info I unfortunately have already retorqued the rocker pedastals and looked under the valve covers. Everything is torqued and solid as of three weeks ago, after I read your post. I have heard of bent push rods but I haven't pulled and checked them. I am pressed for time with school and work so I may just take it to the guy's down at the shop and have them give it a once over.
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Post Fiend
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From: Sioux Falls, SD
Originally Posted by Danner81
Details on setup (basics) afe stage 2, banks quick turbo upgrade, 4" exhaust turbo back, banks six gun, banks big hoss (120 hp), Hpop x-over, AIH delete, boost fooler, and tranny shift kit. I have not done anything to the fuel system yet, but that was the next thing on the list until this noise started. I was looking into getting a regulated return kit and pump back to tank kit from Diesel Innovations.
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From: Rio Rico, AZ.
Originally Posted by Danner81
kwik thanks again for the info I unfortunately have already retorqued the rocker pedastals and looked under the valve covers. Everything is torqued and solid as of three weeks ago, after I read your post. I have heard of bent push rods but I haven't pulled and checked them. I am pressed for time with school and work so I may just take it to the guy's down at the shop and have them give it a once over.
Even when the injectors cut out on decel above 1300 rpm?
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I think so though I haven't tried to compare when the injectors cut out to to just deceleration. I will pay attention to specific rpms and how they compare to when the injectors cut out. I have noticed that the injectors sound eratic on deceleration sometimes. I will check on my way to school today and get back to ya!
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2000 4x4 5.4 edge tune ,mac intake ,flowmaster exhuast.
not sure whats going on but when ever i give a quick tap on thorttle i get a knock or something but it only happen when the tuner is on program 2 or 3 it also happen with 87 89 91 gas if it on stock it dosent do it nor on pragram 1 id really like to know what this could be some told me it could be back pressure lifting my valves do to not having exhaust headers
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not sure whats going on but when ever i give a quick tap on thorttle i get a knock or something but it only happen when the tuner is on program 2 or 3 it also happen with 87 89 91 gas if it on stock it dosent do it nor on pragram 1 id really like to know what this could be some told me it could be back pressure lifting my valves do to not having exhaust headers
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