check fuel pressure first as that will cause a misfire as well. then check for a vacuum leak. lifters will reprime themselves as long as there is oil pressure.if the lifter collapsed it would make a very loud ticking noise then go away after a few seconds

Answered by hmac300 (expert)
17,750 answers provided

how do it check the fuel pressure? the motor has a ticking noise but it is getting quiiter.

Response from gearhead90
2 questions asked

you will probably need an adapter to tap into the fuel rail. most auto parts stores have them to rent. if you are lucky there will be a tap on the fuel rail where you can check it. it should be55-62 psi at idleor with key on andengine not running

Answered by hmac300 (expert)
17,750 answers provided

ok now if the fuel pressure is not in the PSI range what would be the next step?

Response from gearhead90
2 questions asked

replace the fuel pump or filter.

Answered by hmac300 (expert)
17,750 answers provided

ok fuel pressure is at 56PSI so that is good. any other ideas what could be causing the miss?

Response from gearhead90
2 questions asked

check compression and vacuum leak spray choke cleaner for a vacuum leak around intake area also look for vacuum hoses off or holes in them. what is the correct code you are getting.

Answered by hmac300 (expert)
17,750 answers provided

ok the code that is coming up on my code reader is P0301 and all it says is cylinder #1 misfire.

Response from gearhead90
2 questions asked

i used a broomstick and put it by cylinder 1 and i could hear some ticking. its starts fine but after it runs for about 30 sec it bogs down and then you can really tell its missing

Response from gearhead90
2 questions asked

broom sticks aren't that reliable. if you have changed plugs, wires and coil then do what i said in last answer

Answered by hmac300 (expert)
17,750 answers provided