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Author
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Topic: More Engine Concerns.
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Hell_Fish
Gearhead Posts: 860
From: Austin, TX.
Registered: May 2002
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posted 09-02-2002 11:30 PM
   
Well, I got everything on the 302 in the 69, the belts tight, the bolts snug. Everthing, but the valve covers on. I started it and I seem to have no oil pressure. The (stock) gauge starts to move up. them goes right back down to nothing. A few questions.... 1)Will having the valve covers off effect the oil pressure? 2) How long can the engine "safely" run with this condition? 3) What might I have done wrong and how to trouble shoot it? 4)Should it be low until its in drive and the RPM's get up? 5) Am I over reacting?Thanks. ------------------
Dustin C
[IMG]http://pages.moparpages.com/duster/sigs/hell_fish.gif[/IMG]
56 F-100
Mech. for wifes 69 Mustang coupe
65 Plymouth Barracuda
70 Dodge Swinger
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Calcat
Journeyman Posts: 75
From: Los Angeles, CA
Registered: Feb 2002
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posted 09-03-2002 02:53 AM
1.The valve covers have no effect on the oil pressure, only how dirty your engine will get.
2. You don't want to find out how safely you can run the engine like that.
3. Get a cheap mechanical gauge and verify your what you actual pressure is.
4. typically oil pressure starts high and goes down as the oil heats up and thins out.
If you do have low presure it could be loose clearances, a bad pump, bad check ball in pump, or any number of obstructions, including the pickup screen.
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Hell_Fish
Gearhead Posts: 860
From: Austin, TX.
Registered: May 2002
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posted 09-03-2002 10:59 AM
Ok, how do I "Get a cheap mechanical gauge and verify your what you actual pressure is" if "You don't want to find out how safely you can run the engine like that"?The factory gauge starts as low as can be, then mover up some the the L on the gauge then right back down. I will be buying a mech gauge sometime soon. ------------------
Dustin C
[IMG]http://pages.moparpages.com/duster/sigs/hell_fish.gif[/IMG]
56 F-100
Mech. for wifes 69 Mustang coupe
65 Plymouth Barracuda
70 Dodge Swinger
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Ryan Wilke
Gearhead Posts: 2047
From: Stanton, Michigan 49707
Registered: Oct 2000
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posted 09-03-2002 12:14 PM
Dustin,
If I was you, I wouldn't start your engine again until I had the lack of oil pressure figured out!I'd suggest you pull your distributor, install a oil pump primer/driver and turn it with a 1/2 HP drill (most smaller drills won't have the guts to turn it adequately). Then, leave the valve covers off to watch for oil getting up thru the pushrods 7 to the rockers, which should then register pressure on your OE gage....it may take a minute or two to get there, but keep the drill cranking and have a buddy turn the engine over slowly with a socket on the dampener bolt to ensure all bearings, lifters, pushrods & rockers are getting the "good stuff"..... Good Luck!
Ryan  -- You can make an oil pump primer/driver from: (#1) strip out an old distributor for its shaft; (#2)buy a primer/driver; (#3) a piece of rod of adequate-length with a the ppropriately-sized 6-pointed socket (that fits onto the hex oil pump driveshaft) welded to it.
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Hell_Fish
Gearhead Posts: 860
From: Austin, TX.
Registered: May 2002
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posted 09-03-2002 01:59 PM
The rocker are getting oil tho. That the part thats the part I can't figure out.------------------
Dustin C
[IMG]http://pages.moparpages.com/duster/sigs/hell_fish.gif[/IMG]
56 F-100
Mech. for wifes 69 Mustang coupe
65 Plymouth Barracuda
70 Dodge Swinger
IP: Logged |
Ryan Wilke
Gearhead Posts: 2047
From: Stanton, Michigan 49707
Registered: Oct 2000
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posted 09-03-2002 02:53 PM
In that case, I'd change out the oil-pressure sending unit...it may of picked up a plug of silicone or such - giving your gage a bad signal ? It's an easy & inexpensive thing to do and maybe save you some headaches... -- When the pressure went down to 0, did it start to rattle? If it didn't rattle, maybe it really does have oil pressure & you just don't know it. In that case, then, yeah, unscrew the OE sending unit and screw in a mechanical gage at the same port and crank it over & check the new gage..... Good Luck!!
Ryan
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Hell_Fish
Gearhead Posts: 860
From: Austin, TX.
Registered: May 2002
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posted 09-03-2002 04:45 PM
Oh shoot! It did start to vibrate.  Ok, next question. Is it easy to drop the oil pan with the engine in the car?------------------
Dustin C
[IMG]http://pages.moparpages.com/duster/sigs/hell_fish.gif[/IMG]
56 F-100
Mech. for wifes 69 Mustang coupe
65 Plymouth Barracuda
70 Dodge Swinger
IP: Logged |
Hell_Fish
Gearhead Posts: 860
From: Austin, TX.
Registered: May 2002
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posted 09-03-2002 04:48 PM
I just thought of something else, I guessing its not related, but not sure. The spark plugs are only in the block hand thight would that effect it.------------------
Dustin C
[IMG]http://pages.moparpages.com/duster/sigs/hell_fish.gif[/IMG]
56 F-100
Mech. for wifes 69 Mustang coupe
65 Plymouth Barracuda
70 Dodge Swinger
IP: Logged |
Hell_Fish
Gearhead Posts: 860
From: Austin, TX.
Registered: May 2002
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posted 09-03-2002 11:19 PM
I was talking with a friend this evening and he told me my problem could stem from adding some new lifters onto a used cam. Does this sound right? Could that be the problem?------------------
Dustin C
[IMG]http://pages.moparpages.com/duster/sigs/hell_fish.gif[/IMG]
56 F-100
Mech. for wifes 69 Mustang coupe
65 Plymouth Barracuda
70 Dodge Swinger
IP: Logged |
lyle29464
Gearhead Posts: 944
From: Mt. Pleasant S.C.
Registered: Mar 2000
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posted 09-04-2002 12:04 AM
You are jumping all over the place.
I hate to see you waste the time to take the oil pan off to see if you have a problem there. Their was a lot of great advice on the other posts. I would see if I could get a mechanic to come over and trouble shoot it.
Pick up a manual guage first, and run the drill test if you fully understand it.
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mustangboy
Gearhead Posts: 773
From: Ont, Canada
Registered: Mar 2002
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posted 09-04-2002 12:17 AM
I would tighten up all the sparkplugs and make sure the wires are on correctly.Get yourself a mechanical oil pressure gauge and hook it up in place of the stock sender.Spin the oil pump with a drill like you did to check the pressure before(oil coming out of the rockers)and see what kind of oil pressure you have.If it seems ok fire it up and observe the gauge.Its normal for the pressure to go down some once the oil gets hot which should take several minutes.New lifters on an old camshaft should not cause any problems,I have done this a few times with no probs.The oil pressure wire on my 68 stang melted on the header and acted exactly like you are describing.
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Hell_Fish
Gearhead Posts: 860
From: Austin, TX.
Registered: May 2002
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posted 09-07-2002 12:52 PM
Good news, the oil pressure sending unit is bad. The vidration is from my carb. I just need to tune it.Thanks guys. ------------------
Dustin C
[IMG]http://pages.moparpages.com/duster/sigs/hell_fish.gif[/IMG]
56 F-100
Mech. for wifes 69 Mustang coupe
65 Plymouth Barracuda
70 Dodge Swinger
IP: Logged |
SteveLaRiviere
Administrator Posts: 42139
From: Saco, Maine
Registered: May 99
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posted 09-08-2002 04:44 PM
quote:
Originally posted by Hell_Fish:
I just thought of something else, I guessing its not related, but not sure. The spark plugs are only in the block hand thight would that effect it.
Spark plugs ground by their contact with the heads. They are missing {skipping} if they are only finger tight. Never start an engine with finger tight spark plugs. ------------------
All Fords since 1977!
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Hell_Fish
Gearhead Posts: 860
From: Austin, TX.
Registered: May 2002
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posted 09-09-2002 08:26 AM
Thanks Steve,
I will remember that.
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