Timing? carb? both?
New User
Joined: Jan 2008
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The 73 F100 with 360 and std trans requires 6* BTDC at 850 Rpm with Vacuum Hose HOOKED up.
The 73 F100 with 360 auto trans requires 3* BTDC at 650 Rpm with Vacuum Hose hooked up.
Remember this is only a static timing point and Timing gears & Chain may have been worn,broken, or stretched.
How many miles on this engine ?
How many miles/years on distributor ? (could be worn out)
Back-firing or fuel blowing out the carb is caused by Bad Timing setting.
Has everything been lined up on mechanical timing settings with engine off ?
#1 Piston at top of power stroke ? (Not Exhaust stroke)
Distributor Rotor set at #1 Position on distributor cap ?
Firing order correct to direction distrbutor rotor turns ?
The 73 F100 with 360 auto trans requires 3* BTDC at 650 Rpm with Vacuum Hose hooked up.
Remember this is only a static timing point and Timing gears & Chain may have been worn,broken, or stretched.
How many miles on this engine ?
How many miles/years on distributor ? (could be worn out)
Back-firing or fuel blowing out the carb is caused by Bad Timing setting.
Has everything been lined up on mechanical timing settings with engine off ?
#1 Piston at top of power stroke ? (Not Exhaust stroke)
Distributor Rotor set at #1 Position on distributor cap ?
Firing order correct to direction distrbutor rotor turns ?
Last edited by Mil1ion; Feb 11, 2007 at 08:03 PM.
New User
Joined: Jan 2008
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Last edited by Mil1ion; Feb 11, 2007 at 08:20 PM.
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Junior User
Joined: Dec 2004
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Yep have been there. This is starting to get me frusterated. and i am still haveing problems with my dip stick. 6 quarts of oil and barley reading it. Is teh flange supposed to be against teh block. **Before i rebuilt it the dipstick would read oil just fine.**
Matthew
Matthew
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Junior User
Joined: Dec 2004
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how much oil should i put in?
No i was thinknig of doing a compression test tommarow. (whats a good compression on the pistions?
LOL nope don't think the pan grew.
Matthew
No i was thinknig of doing a compression test tommarow. (whats a good compression on the pistions?
LOL nope don't think the pan grew.
Matthew
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Post Fiend
Joined: Dec 2003
Posts: 6,658
Likes: 4
From: "Islander"
There isn't a fixed number to go by for your compression as head volume,
head gasket thickness, deck height and cam all play in.
What you want is even compression among all cylinders that's important.
I'm thinking a intake not seating, leave no doubts.
It may be too early to tell plug color but if you had a intake manifold port vacuum leak or around the carb base you'll have a lean carb backfire.
head gasket thickness, deck height and cam all play in.
What you want is even compression among all cylinders that's important.
I'm thinking a intake not seating, leave no doubts.
It may be too early to tell plug color but if you had a intake manifold port vacuum leak or around the carb base you'll have a lean carb backfire.
Last edited by "Beemer Nut"; Feb 12, 2007 at 12:53 AM.
Cargo Master
Joined: Apr 2004
Posts: 2,574
Likes: 4
From: Golden, CO
Originally Posted by Mav06
This is starting to get me frusterated. and i am still haveing problems with my dip stick. 6 quarts of oil and barley reading it. Is teh flange supposed to be against teh block. **Before i rebuilt it the dipstick would read oil just fine.**
Matthew
Matthew
Originally Posted by Mav06
But i think i am still dealing with a timing Issue i listen to the tail pipe and i can hear back fires.(Not big but it has a nice rumble then pop pop then a nice rumble the pop pop Not loud or anything but still getting it.
Since you are still setting the carb, un-hook the vacuum line and plug it. Set the ignition first, with the engine at operating temperature, at curb idle. After you get through that you can adjust the carb.
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
Originally Posted by Mil1ion
The 73 F100 with 360 and std trans requires 6* BTDC at 850 Rpm with Vacuum Hose HOOKED up.
The 73 F100 with 360 auto trans requires 3* BTDC at 650 Rpm with Vacuum Hose hooked up.
Remember this is only a static timing point and Timing gears & Chain may have been worn,broken, or stretched.
How many miles on this engine ?
How many miles/years on distributor ? (could be worn out)
Back-firing or fuel blowing out the carb is caused by Bad Timing setting.
Has everything been lined up on mechanical timing settings with engine off ?
#1 Piston at top of power stroke ? (Not Exhaust stroke)
Distributor Rotor set at #1 Position on distributor cap ?
Firing order correct to direction distrbutor rotor turns ?
The 73 F100 with 360 auto trans requires 3* BTDC at 650 Rpm with Vacuum Hose hooked up.
Remember this is only a static timing point and Timing gears & Chain may have been worn,broken, or stretched.
How many miles on this engine ?
How many miles/years on distributor ? (could be worn out)
Back-firing or fuel blowing out the carb is caused by Bad Timing setting.
Has everything been lined up on mechanical timing settings with engine off ?
#1 Piston at top of power stroke ? (Not Exhaust stroke)
Distributor Rotor set at #1 Position on distributor cap ?
Firing order correct to direction distrbutor rotor turns ?
Cargo Master
Joined: Jul 2006
Posts: 3,014
Likes: 91
From: Concord, CA
Originally Posted by Mil1ion
The 73 F100 with 360 and std trans requires 6* BTDC at 850 Rpm with Vacuum Hose HOOKED up.
The 73 F100 with 360 auto trans requires 3* BTDC at 650 Rpm with Vacuum Hose hooked up.
Remember this is only a static timing point and Timing gears & Chain may have been worn,broken, or stretched.
How many miles on this engine ?
How many miles/years on distributor ? (could be worn out)
Back-firing or fuel blowing out the carb is caused by Bad Timing setting.
Has everything been lined up on mechanical timing settings with engine off ?
#1 Piston at top of power stroke ? (Not Exhaust stroke)
Distributor Rotor set at #1 Position on distributor cap ?
Firing order correct to direction distrbutor rotor turns ?
The 73 F100 with 360 auto trans requires 3* BTDC at 650 Rpm with Vacuum Hose hooked up.
Remember this is only a static timing point and Timing gears & Chain may have been worn,broken, or stretched.
How many miles on this engine ?
How many miles/years on distributor ? (could be worn out)
Back-firing or fuel blowing out the carb is caused by Bad Timing setting.
Has everything been lined up on mechanical timing settings with engine off ?
#1 Piston at top of power stroke ? (Not Exhaust stroke)
Distributor Rotor set at #1 Position on distributor cap ?
Firing order correct to direction distrbutor rotor turns ?
Elder User
Joined: Jul 2006
Posts: 545
Likes: 0
From: Lockport, NY
timing how to ???
just replaced a damaged and rusted distributor on a 95 f150 I6 300 4.9l auto
transmission.
here is my questions
1) runs great and smooth at idle. take for a drive stalls at stop.
2) i am thinking timing( to get it to start i set TDC)
- mitchell says set to 10* BTDC how do i adjust this back.
do i pull dist. or leave in place.
do i turn crank with socket or tap etc.
i appoligize i hit the wrong tab i will start new thread. please disreagard.
transmission.
here is my questions
1) runs great and smooth at idle. take for a drive stalls at stop.
2) i am thinking timing( to get it to start i set TDC)
- mitchell says set to 10* BTDC how do i adjust this back.
do i pull dist. or leave in place.
do i turn crank with socket or tap etc.
i appoligize i hit the wrong tab i will start new thread. please disreagard.
Last edited by ameritaz3038; Feb 28, 2007 at 04:11 PM. Reason: wrong forum
Thread Starter
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Junior User
Joined: Dec 2004
Posts: 86
Likes: 0
OK,
Big news That elderborck carb had a bad accelerator pump so i was tired of messing with it and went and got a holly at autozone they were on sale. so i mounted that and a machanic and i could never get it running right so i took that back to autozone and got another one. Put it on cranked over till fuel got upto it and started right up no tunning nothing ran great. WELL come to find out that the first one i bought was like a 750cfm giagantic carb for my 360. The 750cfm carb was put in a 600cfm box (IDIOTS dunno how it happend or anything but they are diffrent) so i got it all figured out Thanks so much for all your help and patience.
THANKS!!!!!!
Matthew
Big news That elderborck carb had a bad accelerator pump so i was tired of messing with it and went and got a holly at autozone they were on sale. so i mounted that and a machanic and i could never get it running right so i took that back to autozone and got another one. Put it on cranked over till fuel got upto it and started right up no tunning nothing ran great. WELL come to find out that the first one i bought was like a 750cfm giagantic carb for my 360. The 750cfm carb was put in a 600cfm box (IDIOTS dunno how it happend or anything but they are diffrent) so i got it all figured out Thanks so much for all your help and patience.
THANKS!!!!!!
Matthew
Posting Guru
Joined: Aug 2005
Posts: 1,036
Likes: 1
From: NE Ga
Originally Posted by Mav06
No i was thinknig of doing a compression test tommarow. (whats a good compression on the pistions?