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Author
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Topic: cutting out at 4800 rpm and oil pressure?
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Fastymz
Moderator Posts: 11429
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 05-27-2003 02:16 AM
   
I was having some problems with my car stubling at idle and at cruise.
Now I got on it today and at 4800 the car loses some power and then slowly comes back on???
Does this sound like ignition maybe coil to any of you?I'm going out in the morning and trying to find a duraspark system. Also since I did the new cam and lifters.My oil pressure is at 70 at start up until the car warms up.Then it goes to 25 at idle and 60 at cruise speed. The tapped noise was at it's worst tonight too.Do you think that tie's into the car losing some power above 4500rpm? This car is starting to drive me crazy.
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SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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N266fords
Gearhead Posts: 557
From: Spokane ,WA USA
Registered: Apr 2003
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posted 05-27-2003 02:36 AM
Ron have you pulled the valve covers to see if the noise is a loose or broken valve train part.rocker pushrod bent,ect..As far as the ignition find a duraspark unit and grab the box and coil and all the wires that conect them up and then wire it I will send you the diagram in a email ron..Bruce
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Fastymz
Moderator Posts: 11429
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 05-27-2003 02:40 AM
Thanks Bruce,No I have not pulled the cover yet.I had them off last week.Every thing looked good.They have always made alittle noise.But on the way home it was worst then ever.But I was more worried about the lose of power above 4500rpm and then it comes back on. ------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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V8 Thumper
Gearhead Posts: 3467
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 05-27-2003 08:09 AM
Sounds like fuel (pressure/volume~ float levels) to me...------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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V8 Thumper
Gearhead Posts: 3467
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 05-27-2003 08:37 AM
The oil pressure sounds fine. That's pretty close to what mine runs at.Pull the fuel pump off, check to see if the eccentric is on tight. If you're hearing a 'tapping', it could be there... resulting in low/inadequate fuel delievery  Then again, maybe not. Just an idea  ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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rockafellz
Gearhead Posts: 1291
From: San Lorenzo, CA, USA
Registered: Aug 2001
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posted 05-27-2003 10:22 AM
Hey Scoop, sounds like a possible ignition problem. It doesn't misfire does it? Have you checked the wires? Any arcing going on? If you're really going to switch ignition systems, I might have a duraspark distributor for ya if I can dig it up. Last I remember, the distributor shaft was firm and not wobbly, it has a rotor and two caps (blue & grey). Erik ------------------
1966 Ford Mustang 2+2
Mine - Restomod in Progress 1966 Ford Mustang Coupe
Dad's - Original Unrestored
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Fastymz
Moderator Posts: 11429
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 05-27-2003 10:47 AM
quote:
Originally posted by V8 Thumper:
The oil pressure sounds fine. That's pretty close to what mine runs at.Pull the fuel pump off, check to see if the eccentric is on tight. If you're hearing a 'tapping', it could be there... resulting in low/inadequate fuel delievery Then again, maybe not. Just an idea
Todd I'll check that out too.I the float levels look good just alittle above holes front and rear.
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SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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Fastymz
Moderator Posts: 11429
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 05-27-2003 08:07 PM
Ok this is what I've done so far.
I checked the plugs they all looked ok,some had white on the tips.I changed the coil it did not help?
I took off all the plug wires checked them and fixed the one that was burnt.
I up the float levels alittle.
The car does not seem to miss,I think that was one plug wire I didn't fix right.Alex helped me out on that one.  The car still loses some power like it's just a rev liminter in it,above 4500.But no were near as bad as it did before.I adjusted the float levels alittle higher.
Right now the fronts are just above the sight plug,and the rears are about in the middle of the sight plug.Does changing the accel,pump rod justment change how much float level the carb needs.The accel rod was way out of ajustment I got it right.And not yesterday was only the 2nd time driving it since I adjusted it.Thats when it started to die above 4500rpm. Sorry for the long post. ------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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Fastymz
Moderator Posts: 11429
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 05-27-2003 08:08 PM
P.S. I have not pulled the gas pump yet.I may try it and look to make sure all is tight.------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
IP: Logged |
N266fords
Gearhead Posts: 557
From: Spokane ,WA USA
Registered: Apr 2003
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posted 05-27-2003 08:18 PM
scoop you are useing a coil for electronics and not points right??because that would do it as well..dont ask how i know!!! lol..also a loose wire not making great contact will do that, meaning a coil wire not pushed into the hole tight enough or a spark plug wire not clicked into position on the plug..as rpm goes up so does the load on the spark plug to fire it..make sure everything is tight...Bruce
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Fastymz
Moderator Posts: 11429
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 05-27-2003 08:44 PM
It's all tight Bruce,and it's a non points coil.Made for the pertronix type system.
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SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
IP: Logged |
BLstangin
Gearhead Posts: 357
From: South Central MN
Registered: Apr 2002
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posted 05-27-2003 10:58 PM
Hey Scoop, you have a pertronix unit in that thing don't you? Maybe that is the problem if you have one? Just something to check into.------------------
1970 coupe restored with the help of my dad. 302 with 600 holley, aluminum intake, headers, pertonix ignitor 2 with matched coil, lakewood bellhousing, 4-speed toploader, and 2.79 open 8" rear. Soon to be 9" 3.25 trac-lok
1986 f-150, 5.0, factory towing package with original c-6 trans
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Fastymz
Moderator Posts: 11429
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 05-28-2003 01:43 AM
I know if could be the unit.It's only 6mo's old and has only been used for 3mo's. 
The six month old pertronixII coil was leaking oil today.I thought it was wet the other day too.
So I put another coil I've had around and will run it tomorrow.I'm doing the duraspark system right now.
I've only got about $60 into it for now.If all the old parts work.
But that darn pertronix system with coils and rebuilt dist I have about $250 into it.
Any one want to buy the whole package.  ------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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65_302
Gearhead Posts: 239
From: Bixby, OK
Registered: Jul 2001
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posted 05-28-2003 01:11 PM
quote:
Originally posted by Fastymz:
Any one want to buy the whole package.
I have a set of 8.8mm Accel plug wires I will trade you Meet me in Vegas next week and we can swap parts
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Fastymz
Moderator Posts: 11429
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 05-29-2003 02:40 AM
No,and I'd like to meet you but, I can't get to Vegas next week. 
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SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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65_302
Gearhead Posts: 239
From: Bixby, OK
Registered: Jul 2001
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posted 05-29-2003 01:40 PM
Boo I thought is was a good swap...........for me. Maybe next trip. Next time I will schedule a weekend stay so my wife and I can go to the track.
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Fastymz
Moderator Posts: 11429
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 05-29-2003 02:55 PM
quote:
Originally posted by 65_302:
Boo I thought is was a good swap...........for me. Maybe next trip. Next time I will schedule a weekend stay so my wife and I can go to the track.
The vegas track is real nice from what I've heard. ------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
IP: Logged |
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