chenlenglor

So my H23a1 motor bottom block blew and I needed my car to start running so i had a spare f22a4 to drop in. We did every conversion to it putting the h23 intake manifold and harness on it. and drop it in. Apparently whenever we try to get it started, it'll crank but then you hear a loud pop noise. We put on the headers, but not the downpipe? What do you think is the problem? Helps ASAP!

H23_del_soul

Need more info.

chenlenglor

Well I finally got the f22 and eveyrthing settle in the engine bay... And i was going to start it up, while i attempted to, the motor only cranked, then a loud Pop came from the downpipe.. Later We messed with the spark plugs and everything and attempted to start it again. It cranked and the motor felt like it wanted to start but couldn't? Do you guy possibly know what is the problem? Please tell me soon!

Enzo15

Do you guys have the ignition timing correct? I wanna say it sounds like incorrect timing... check the came timing as well..

TechBabyJ

That's deffenetly the timing find your timing belt or chain and take it off there should be a notch or makes area in the gear and then where your valves attach there should also be a a notch to a line the pistons and the valves in sync with you ignition spark plug wireing once everything is in line the car should start right up...assuming everything is wired correctly and you have all your fuses on point...( barely what's poping loud is your exhaust because when the pistons are in the down position the spark plugs ignite the gas early and causes the pistons to stop instead of continuously pushing up and down in your engine)

- P.S. sorry on my description I'm not good with the parts and their names in Spanish so I know the Spanish names but I'm pretty good with the actual jobs lol

ross2004

You're not good with dates either.