VALVE JOB????
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VALVE JOB????
It sounds like my good ole 1967 F100 with a 352 has developed a pinging noise. It started on the right side about a year ago. At first I thought it was a slight exhaust leak, but it sounds more like a valve tap. I tried putting a can of restore in the motor but didn't have any luck. Now the ole girl has started to have a matching tap on the left side. The truck is 100% original with only about 75K miles. It was a local grounds maint. truck until I inherited it. A fellow at the gun shop (actually the grocery store, but gun shop sounds better) said it sounds like a burned valve.
Does anyone have any ideas or suggestions? I figure it may be time to have the ole girl rebuilt. She still has plenty of power and runs nice aside from the tapping. Is it possible to give the truck new valves without going to the trouble and expense of a complete rebuild? What would be involved? Is it possible to do the work under the valve covers or do the heads have to come off?
It almost sounds as the tap is coming from the "flapper" at the bottom of the exhaust manifold. A long time ago I had one of these stick on a Buick and it sounded a lot like this does.
Thanks for any advice. John
Does anyone have any ideas or suggestions? I figure it may be time to have the ole girl rebuilt. She still has plenty of power and runs nice aside from the tapping. Is it possible to give the truck new valves without going to the trouble and expense of a complete rebuild? What would be involved? Is it possible to do the work under the valve covers or do the heads have to come off?
It almost sounds as the tap is coming from the "flapper" at the bottom of the exhaust manifold. A long time ago I had one of these stick on a Buick and it sounded a lot like this does.
Thanks for any advice. John
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From: Inthepast
VALVE JOB????
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The "burnt" valve syndrome sounds quite probable. I have a truck with that affliction. The word I would use is a popping-type sound rather than a tapping or 'ping'. You will have to pull the heads to do the repair work, but a compression test may help identify and confirm this problem.
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The "burnt" valve syndrome sounds quite probable. I have a truck with that affliction. The word I would use is a popping-type sound rather than a tapping or 'ping'. You will have to pull the heads to do the repair work, but a compression test may help identify and confirm this problem.
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VALVE JOB????
Stockman is leading you in the right direction. A comp. test is where you want to start. You are looking for at least one weaker cyclinder on either side. Being your noise stems from both side. Depending on your mech. ability. Any half experienced backyarder can pull a set of heads. Take em' down to get rebuilt and put them back on. (Makeing sure you're useing a guide such as chilton or equal. For correct bolt pattern installment and torque.)The final install part of adjusting your valves can be tricky but not impossible if you read a book, ask a willing neighbor, or wright back to this site.
Trucks are like life. When it breaks, all you need is a little time and effort. And it can all go back together again. And sometimes better than before.
Trucks are like life. When it breaks, all you need is a little time and effort. And it can all go back together again. And sometimes better than before.
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