JsSIR

ok i know there are a lot of "weird start up" threads but i didn't see any in relation to my problem. so here it goes...

i have 91 DA and couple of weeks ago it was startin up weird. meaning i would either have to prime it multiple time then crank it or prime it then crank and hold til it started up. checked the timing its fine, changed out the spark plugs, so then i thought it was the fuel pump goin bad so went out and bought a walbro 255lph. that fixed the problem for like a week. the car was startin right up with no problems but yesterday it went back to its old ways. haven't messed wit the car since puttin the pump in, so i have no idea what the problem could be.

please help me out any good input would be great thanks

wrestler72

Did you check the relay for the fuel pump?..Those years honda's are known for bad relay's

slaminsam

Just throwing it out there but have you changed the fuel filter? Excessive clogging would cause a hard start.

JsSIR

well i thought so to but why would the car start up fine for one week but then f up the next

slaminsam

The new pump is capable of flowing more than the stock and able to take the higher pressure it would take to push through the filter.

JsSIR

can you please clarify lol its monday and im a lil slow today thanks

bsivoljr

He's saying the walboro would pump the gas at a stronger rate than the old pump which would allow the gas to travel the lines enough to operate the car until the buildup became too much for even the walboro to pump through. Simple even for a Monday

The fuel filter is in the engine bay and catches any gunk and dirt and deposits before the fuel is actually introduced into the ignition process. With it clogged you could get occasional starts. No start. It's easier to change the fuel filter than it is the pump so don't worry too much

JsSIR

well i already changed out the pump so the next thing would be to change out the filter then see wat happens...

tylersvols

yeah change out the fuel filter and you might wanna get you some injector cleaner or fuel treatment stuff.

JsSIR

yeah definitely do that and let you guys know wat happens. thanks for the help

JsSIR

ok bought the fuel filter yesterday will put on later on today and bought that seafoam stuff to clean out the fuel system we'll see how everything goes

JsSIR

ok put the filter on but nothing still giving me the same problem. my next guess is the main relay so that will be next on the swap out list. my friends says it either that or fpr is goin bad but idk. another says that is could be the intake mani gasket that it has a leak. also wanted to mention that when i tried to raise the fuel pressure the guage didnt move one bit.


SO PLEASE SOMEONE HELP ME!!!!!!!

JsSIR

bought the relay putting it on wen i get out of work today and pray thats the problem.

but no one has anymore input????

OldSkoolDa91

i dont see it being the intake manifold gasket. it would still start, it would just rev high. did the main relay fix the problem?

JsSIR

unfortunately it did not solve the problem car still starts up weird. plus idk if i mentioned it but wen i try to adjust the fuel pressure it wont do anything. my gauge still reads the same. so ima try replace it with a OE one and see if that fixes it.

more updates tomorrow...keep the input comin

OldSkoolDa91

any check engine lights? even if your dash light doesnt come on, pull the carpet back and see if the ecu is flashing any codes

JsSIR

well the last time i checked it was only throwing code for IAT and the Knock sensor but i was told that it wouldnt cause my problem...

guna swap out ECU's and fpr's to see wat happens

OldSkoolDa91

have you tried dizzy cap and rotor yet? wires?

JsSIR

well i 've thought about it but then again why would start up fine for a week, i mean on a dime, then next week go back to startin up sh!!ty like before???

swapped ecu's still nothin, guna try swapin fpr's wen i get home form work

E Swift

Let me know if the fpr fixed it. I'm having a similar problem right now with my car, and i'm debating about buying a new fpr to see if its the problem. All signs point to it.

JsSIR

well the fpr i was guna swap with is to small for return hose so need to find that fits...

im also debating wether the fuel pump went bad again even though its brand new...could be a possiblity...

E Swift

Well you can hear your fuel pump when you turn your ignition to ON. You'll hear a low humming noise coming from the backseat of your car. If you don't hear that, then you know your fuel pump doesn't work.

JsSIR

yea i hear it everytime, the weird thing is that when i installed the new pump i upped the pressure to 55psi and the following week it dropped back to 42psi?????

JsSIR

ok after a week or so the car fuel pressure was dropping. so after swaping the main relay, injectors, and fpr. it ended up being the fuel line that connects to the pump and bracket ( dont know wat to call it) was really bad. it swelled up and burst. so i swapped it out and boom. no more problem.

thanks everyone for your help

OldSkoolDa91

wow, that sucks man. but at least you figured it out