Stock timing set-backfiring

goodyear1984 · 03-30-2007, 10:23 PM

hey just an fyi for u if u have a efi ho motor and your useing the non ho fireing order u will have problems with popin because the injectors are firing with the ho order of 1-3-7-2-6-5-4-8.and not the non ho order 1-5-4-2-6-3-7-8...like usmc said the chain wont cause a problem unless its sloppy or not lined up right....so any ways if u do have the efi ho and u put the non ho order cam in it plan on swaping that cam out again if u want it to run right ...and to answer the question befor its asked you cant re wire the injectors it wont run right

USMC302 · 04-06-2007, 07:39 AM

Well??......

Gearhead999 · 04-07-2007, 09:06 AM

You have a lot of good advice given above. The chain isn't your problem.

You said you degreed it....if you did and it came out OK then it isn't retarded, unless you used a different chain set to degree it then you used to run it.

Look elsewhere. Start with firing order, intake leak, etc.

"No it shouldnt be missing, because it runs good unless it backfires"

Love this statement....

03-30-2007, 10:23 PM	#1
goodyear1984 Registered Member Join Date: Dec 2006 Location: new york Posts: 482	Re: Stock timing set-backfiring hey just an fyi for u if u have a efi ho motor and your useing the non ho fireing order u will have problems with popin because the injectors are firing with the ho order of 1-3-7-2-6-5-4-8.and not the non ho order 1-5-4-2-6-3-7-8...like usmc said the chain wont cause a problem unless its sloppy or not lined up right....so any ways if u do have the efi ho and u put the non ho order cam in it plan on swaping that cam out again if u want it to run right ...and to answer the question befor its asked you cant re wire the injectors it wont run right __________________ 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

04-06-2007, 07:39 AM	#2
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	Re: Stock timing set-backfiring Well??...... __________________

04-07-2007, 09:06 AM	#3
Gearhead999 Registered Member Join Date: Sep 1998 Location: Oviedo, FL Posts: 992	Re: Stock timing set-backfiring You have a lot of good advice given above. The chain isn't your problem. You said you degreed it....if you did and it came out OK then it isn't retarded, unless you used a different chain set to degree it then you used to run it. Look elsewhere. Start with firing order, intake leak, etc. "No it shouldnt be missing, because it runs good unless it backfires" Love this statement.... __________________ "Support our Troops" Dave 1968 Cougar 2004 Thunderbird 2007 F150 Harley-Davidson, SuperCrew 1986 LTD 1997 Ranger 1992 Honda Civic

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