knocking mustang 5.0

5150coupe · 12-07-2007, 09:47 PM

i ended up finding out that it was just a timing issue. just backfiring...but now i have a couple other related issues. i can't seem to set the timing to 14 like it was before. at 14 i get backfiring and it won't idle or run well unless it is advance way to high at about 22-25. it doesn't seem to ping even though it is high, so i thought maybe the timing marker is off or something, but it looks to be at the same location as my friends coupe. i'm going to put it on the computer and start checking codes.

USMC302 · 12-11-2007, 12:00 PM

Sounds like you a tooth off. Pull the dist, set engine to TDC, and restab it. Double check your ignition wires as well to make sure you don't accidentally have one crossed.

goodyear1984 · 12-11-2007, 10:37 PM

13726548 firing order and i think u point the rotor to the ft drivers side upper intake bolt its like 1 oclock

goodyear1984 · 12-11-2007, 10:39 PM

dont forget thats at tdc

USMC302 · 12-12-2007, 10:44 AM

Quote:

Originally Posted by goodyear1984

13726548 firing order and i think u point the rotor to the ft drivers side upper intake bolt its like 1 oclock

Negative. The rotor should point directly at the number 1 post on the dist, that's the one that's connected to cylinder number 1.

goodyear1984 · 12-12-2007, 06:40 PM

the only way the rotor wont hit the number one is if ur off a tooth ..not negitive look up the rotor position and set it there with the engine at tdc.then if u have the rotor set right get the rotor to be as close to number 1 as possiable so it will start up the first time. then set timing, and if u set the rotor and have it at tdc of compression stroke it will be perfect.
goodluck

goodyear1984 · 12-12-2007, 06:50 PM

also if u have the pedestal mount rockers make sure u check the valve lash most times u dont need to shim but u will get a back fire if u are in need of a shim.i had to shim only one of my rockers because of a backfire problem, and hopefully u have a good set of springs

5150coupe · 12-13-2007, 06:09 PM

-how do i know if it is on the compression stroke. what i have been doing is this: crank the motor till the damper is at 0 degrees and the 1 st piston is at the top. then i set the distributor pointer to the #1 post. it seems to start fine this way, but still won't run at 14 degrees or anything close. i will only run way past 14 degrees, but has no power and is hard to start. maybe the springs cause i left the stock gt40 springs on, but they are double coil and that seems fine for my conservative combo.

12-11-2007, 12:00 PM	#2
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	Re: knocking mustang 5.0 Sounds like you a tooth off. Pull the dist, set engine to TDC, and restab it. Double check your ignition wires as well to make sure you don't accidentally have one crossed. __________________

12-11-2007, 10:37 PM	#3
goodyear1984 Registered Member Join Date: Dec 2006 Location: new york Posts: 482	Re: knocking mustang 5.0 13726548 firing order and i think u point the rotor to the ft drivers side upper intake bolt its like 1 oclock __________________ 347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters ^best et so far 11.6 1.61 60ft coming soon 9sec et's 1992 mustang gt 2001 gmc 1500 4x4 78 century boat 92 skidoo

12-11-2007, 10:39 PM	#4
goodyear1984 Registered Member Join Date: Dec 2006 Location: new york Posts: 482	Re: knocking mustang 5.0 dont forget thats at tdc __________________ 347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters ^best et so far 11.6 1.61 60ft coming soon 9sec et's 1992 mustang gt 2001 gmc 1500 4x4 78 century boat 92 skidoo

12-12-2007, 06:40 PM	#6
goodyear1984 Registered Member Join Date: Dec 2006 Location: new york Posts: 482	Re: knocking mustang 5.0 the only way the rotor wont hit the number one is if ur off a tooth ..not negitive look up the rotor position and set it there with the engine at tdc.then if u have the rotor set right get the rotor to be as close to number 1 as possiable so it will start up the first time. then set timing, and if u set the rotor and have it at tdc of compression stroke it will be perfect. goodluck __________________ 347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters ^best et so far 11.6 1.61 60ft coming soon 9sec et's 1992 mustang gt 2001 gmc 1500 4x4 78 century boat 92 skidoo

12-12-2007, 06:50 PM	#7
goodyear1984 Registered Member Join Date: Dec 2006 Location: new york Posts: 482	Re: knocking mustang 5.0 also if u have the pedestal mount rockers make sure u check the valve lash most times u dont need to shim but u will get a back fire if u are in need of a shim.i had to shim only one of my rockers because of a backfire problem, and hopefully u have a good set of springs __________________ 347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters ^best et so far 11.6 1.61 60ft coming soon 9sec et's 1992 mustang gt 2001 gmc 1500 4x4 78 century boat 92 skidoo

12-07-2007, 09:47 PM	#1
5150coupe Registered Member Join Date: Jun 2007 Posts: 28	Re: knocking mustang 5.0 i ended up finding out that it was just a timing issue. just backfiring...but now i have a couple other related issues. i can't seem to set the timing to 14 like it was before. at 14 i get backfiring and it won't idle or run well unless it is advance way to high at about 22-25. it doesn't seem to ping even though it is high, so i thought maybe the timing marker is off or something, but it looks to be at the same location as my friends coupe. i'm going to put it on the computer and start checking codes.

12-13-2007, 06:09 PM	#8
5150coupe Registered Member Join Date: Jun 2007 Posts: 28	Re: knocking mustang 5.0 -how do i know if it is on the compression stroke. what i have been doing is this: crank the motor till the damper is at 0 degrees and the 1 st piston is at the top. then i set the distributor pointer to the #1 post. it seems to start fine this way, but still won't run at 14 degrees or anything close. i will only run way past 14 degrees, but has no power and is hard to start. maybe the springs cause i left the stock gt40 springs on, but they are double coil and that seems fine for my conservative combo.

Thread Tools
Show Printable Version Email this Page
Display Modes	Rate This Thread
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode	Rate This Thread:

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Knocking When My 00 Gt is Cold? Help	Crackerballer	Modular Madness	1	07-18-2002 09:06 PM
Bad knocking noise	mustangLX92	Windsor Power	0	07-09-2002 07:54 AM
I can hear you knocking....	jerrys84	Windsor Power	0	04-22-2002 10:40 AM
ticking/knocking	noney16	Windsor Power	3	04-04-2002 12:26 PM
Morning knocking	Rocket 99GT	Modular Madness	3	03-28-2001 03:08 PM