Replace Cylinder Head (Help/Tips needed)

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Jun 8, 2003 | 01:06 PM

#16

quantalimo

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From: Florida

Replace Cylinder Head (Help/Tips needed)

Well i may just replace the Valve seals and head gasket ......Thas should remedy the problem without causing uneven compression ....and cost me alot less money as well.

I fixed the Idle problem and it smokes alot less since I swaped out the Carb.

Now I just get a small puff of smoke on first start up ocassionally...
and the Idle is perfect...runs like a top..

The other carb was adding like 98 percent of the smoke(running too rich)....

and im goin to say its just the valve seals got hardened from when the truck sat for several years..

I will do a compression test on monday.....

last time one was done it was fine about 9 months ago..

Last edited by quantalimo; Jun 8, 2003 at 01:21 PM.

Jun 9, 2003 | 04:50 AM

#17

Pkupman82

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From: Muskegon, MI (home)

Replace Cylinder Head (Help/Tips needed)

Believe it or not despite the 5 collapsed lifters, and all the oil smoke; my 300 still purred like a kitten. It still ran strong, could lay 50ft of rubber no problem. I did open the bottom end of the engine, all rods and mains were tight, the cylinders looked okay too. I installed a new standard oil pump while I was in there. I felt the engine would probably be okay so I installed the reman head, because my original head was cracked on a couple of the valve seats. Evidently the new head put too much pressure on the bottom end and it let go. As long as you don't have to bore the cylinders, or replace any major internal components ( camshaft, crankshaft, pistons, rods) you could probably rebuild your original 300 for under 800 dollars; remans run 900 plus. Do you plan on keeping the truck for any longer than a year? If so go ahead and rebuild/replace the engine. Otherwise it really would not be worth it to spend all that money only to turn around and sell the truck. The other thing you could do is call a few junkyards and see if any of them have a decent running 300 for sale. Or look in the classified ads in the newspaper for another motor.

Jun 9, 2003 | 07:09 AM

#18

quantalimo

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From: Florida

Replace Cylinder Head (Help/Tips needed)

I plan on keepin truck I was just about to lay paint down on it then I saw the somke.....

Ill run this one while I plan to get a new one within next 6 months..the carb swap almost ceased the smoke...

Jun 10, 2003 | 03:25 AM

#19

Pkupman82

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From: Muskegon, MI (home)

Replace Cylinder Head (Help/Tips needed)

Sounds like a good plan to me, another old Ford on the road makes the world a much better place!

Jun 14, 2003 | 04:48 PM

#20

derek_seli

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From: Saskatchewan, Canada(farm

Replace Cylinder Head (Help/Tips needed)

on my 76 f100 with a 390, there is white smoke coming out of the left tailpipe. There is alsossome liquid coming out of the the pipe as well. I haven't noticed any proformance change. I know the wires are bad(getting new ones). Is it just a cylinder not firing, or is it more serious?

Jun 14, 2003 | 09:59 PM

#21

kcw12

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From: Indiana

Replace Cylinder Head (Help/Tips needed)

Hrmm could be a cylinder smokin or water in the muffler

Jun 17, 2003 | 06:41 AM

#22

Pkupman82

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From: Muskegon, MI (home)

Replace Cylinder Head (Help/Tips needed)

I does it smoke white and drip liquid in all temperatures? If it only does it in the cold I would venture to say that is normal. However as much as I hate mention it, you could have either: a blown head gasket, cracked head or block, I am not very familiar with the construction of the 390 block and heads. My advice would be to do a compresson test on all cylinders, remove the spark plugs and check for any evidence of moisture. Next ime you drive check the temp guage, to see if you are running hot; also monitor your coolant level. That is about the best I can tell you. I would recommend going to the FE section of the forum, those guys could probably help you find the problem easier. Good luck!