HondaTechMan121

i bought this car like 5 months ago with 65k on the body and a f22b1 engine
(i thinks that's a Accord engine) in it so its been swapped after messing with so wires i got the fuel pump to prime and spark to work. it did not fire still so i checked the firing order and matched it up so that's good now it just back fires from the intake and it seems like it wants to start but it wont.

So what do i need to check for the backfire issue?

snobordboy

Start with mechanical timing.

HondaTechMan121

how would ik if its out of timing on this engine?

snobordboy

Take off the timing covers, turn it to tdc, and see if all of the timing marks line up correctly.

fcm

Ditto the above^^^ it sounds like a timing issue, check both mechanical and electrical timing, YouTube has more then a few vids on timing, both mechanical and electrical. 94

HondaTechMan121

well i redid the timing and firing order and it still back fires from the intake i read somewhere that if uare not getting the right amount of fuel it will do that also

holmesnmanny

Take a close look at the iacv connector and the iat connectors and all those around the intake area, including the map sensor. It's possible to accidentally swap connectors which can cause an issue like yours.

HondaTechMan121

i check them even swaped em around with other sensors and still the same ik the timing is good i checked spark and i have fuel at the rail is there certin senors that the engine needs to fire?

HondaTechMan121

That ground was not working so i fixed it last owner fawked it up




the last owner did not swap the fuel rail so he rigged it lol

HondaTechMan121

http://vid1012.photobucket.com/album...pspqinpimw.mp4

HondaTechMan121

im out of ideas if anyone needs a pic or any info let me know

holmesnmanny

the cat could be clogged, pull the oxygen sensor and see if it runs better

HondaTechMan121

i took the headers off and when i was turning it over gray smoke was coming out the exhaust holes

holmesnmanny

Compression test the engine.

HondaTechMan121

ya im going to do that today after work i was hopen and prayin it was not a bad engine but after i made sure everything else was good and it still not working blaaa

HondaTechMan121

i just been looking it over ill be buying a compression tester this week but i also got to thinking Dont u have to repin the ecu when going from a h23a1 to f22b1 for vtec and the injectors to work? if that is so can someone tell me what i need to repin.