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| need some input if possible http://www.coloradoclassicbroncos.com/viewtopic.php?f=4&t=7014 |
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| Author: | cravenbronco [ Fri Nov 28, 2014 1:31 pm ] |
| Post subject: | need some input if possible |
Well we were on our way home last night when I pulled in to the gas station and put it in park. I started to hear a tapping on drivers side I'm sure it was a lifter or a rod. Now I'm starting to FREAK OUT at this point. So I told my self I need to limp it home now here is the kicker I started to go up the road and it hit 1500 rpm and the noise quit. So I figured it would do it again when I put it in park when I got home. It hasn't done it since. Now my thought is : It might be the oil pump starting to go out. Or should I be looking somewhere else? It has a 302 F I Engine |
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| Author: | Viperwolf1 [ Fri Nov 28, 2014 2:47 pm ] |
| Post subject: | Re: need some input if possible |
Could be an exhaust leak. |
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| Author: | Justin [ Fri Nov 28, 2014 2:54 pm ] |
| Post subject: | Re: need some input if possible |
That was my first thought as well. I had a leaky header gasket that did similar things. Sounded exactly like a lifter tick under heavy acceleration. Could also be a lifter getting a little sticky. |
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| Author: | cravenbronco [ Mon Dec 01, 2014 1:48 pm ] |
| Post subject: | Re: need some input if possible |
So I checked the exhaust manifolds and they are nice and tight. How would I get the sticky lifter to work the way it needs to ? It has not done it since I started it today and no noise. Can a oil pump kind of go out or do they just quit working? When in park oil pressure drops to 20 psi and when accelerating it goes up to 50 psi Now the half cab stays at 50 psi all the time. Thank you |
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| Author: | Gunnibronco [ Mon Dec 01, 2014 1:57 pm ] |
| Post subject: | Re: need some input if possible |
Oil pressure sounds ok. Mine drops low when idling. I don't know if oil pumps fail intermittently, I haven't heard of one doing that. There are "tricks" to unsticking lifters, like adding different things to the oil. But I don't know of them off hand, and can't vouch for the effectiveness or safety of any. |
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| Author: | Kinder [ Mon Dec 01, 2014 2:17 pm ] |
| Post subject: | Re: need some input if possible |
Marvel mystery oil or ATF comes to mind, something with solvent properties. Not too much though, like a quart or less. |
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| Author: | cravenbronco [ Thu Feb 19, 2015 6:01 pm ] |
| Post subject: | Re: need some input if possible |
So I changed the oil and added some additive. I got it moving again. Decided to take it out and run it. same noise came back and once again I increased rpm and it went away. Could this possibility be a bent push rod. What's your thoughts its a 347 Stroker engine. if I was going to check valves, push rods and valve clearances how would I do so? |
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| Author: | Kinder [ Thu Feb 19, 2015 6:21 pm ] |
| Post subject: | Re: need some input if possible |
Still sounds lifter'ish to me. Checking for a bent push rod is one of the easier things to do. Pop the valve covers, loosen rockers, pull push rods, roll on nice flat surface. Keep them in order. |
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| Author: | cravenbronco [ Thu Feb 19, 2015 10:00 pm ] |
| Post subject: | Re: need some input if possible |
Ok I'll start ripping in to it this weekend while the snow falls. will post what my findings are. |
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