Cranking problemz

ONLY for ADVANCED technical discussion about the 240sx!
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nizmofxclutchgasburn
Posts: 8
Joined: Sat Jun 05, 2010 12:31 am
Car: 1992 Nissan 240sx
Location: bAy ArEa CA

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Yo wat up everyone! I have a 92 dohc and When I tried starting it this morning it was cranking but didn't want to start, in the morning its kinda typical to do that and runs great and starts great through out the whole day but just today for some reason even when the car was warm it doesn't want to start I have to try once won't start just cranking but not starting yet just cranking then i wait for 2 minutes and try again and nothing then i wait, and by the 3rd time i start it with my foot pumping gas and it runs fine.

To let you guys know i had some fuel problems like first my fuel pump so i changed that to a walbro 255 and i also changed my injectors because of a misfire to stock 270cc from DeatschWerks, but before i did those i replaced the distributor, distributor cap, rotor, spark plugs and wires. all that was done a month ago and the car was working perfect! Just today cars running great just the starting issue! Well i hope that was enough info please let me know what you guys think thanks!


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comatoseculture
Posts: 196
Joined: Sun Oct 19, 2008 6:19 am
Car: 1990 240SX coupe. Currently running on Megasquirt.

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okay, you mention the fuel problems but does it sound/feel the same as any one of those times? Not a whole lot to go off of.

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nizmofxclutchgasburn
Posts: 8
Joined: Sat Jun 05, 2010 12:31 am
Car: 1992 Nissan 240sx
Location: bAy ArEa CA

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Actually when i had the fuel problems it would start up no problem just when it would idle you could clearly hear the misfire. So i fixed all of that and for like 3 months it ran fine, take it to work and school and home its all good. Just last night for some odd reason ya turn the key and it just cranks and does nothing until about the 3rd or 4th time i give it about half throttle and has a little trouble but starts right up and when it does and i let go of the gas and key the rpm drops to like 200 and then comes right back up at 700 and idles like nothings wrong weird!

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comatoseculture
Posts: 196
Joined: Sun Oct 19, 2008 6:19 am
Car: 1990 240SX coupe. Currently running on Megasquirt.

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Doesn't sound like its a real issue. I believe there is a bulletin about hard starts. Keep it in mind down the road, and/or let us know if/when it happens again.

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nizmofxclutchgasburn
Posts: 8
Joined: Sat Jun 05, 2010 12:31 am
Car: 1992 Nissan 240sx
Location: bAy ArEa CA

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ooo it hasn't gone away yet i just been working no time to work on the car but i am this weekend im still very confused im gonna look up the bulletin do you have a link let me know what else you think i can try thanks for your help bro!

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nizmofxclutchgasburn
Posts: 8
Joined: Sat Jun 05, 2010 12:31 am
Car: 1992 Nissan 240sx
Location: bAy ArEa CA

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OK so i had time to work on it today so i check to see if the fuel pump is working and there's pressure coming out i disconnected the hose from the fuel rail and gas shot out from underneath my thumb lucky i had a bottle right next to me! So new fuel pump, new injectors new, dizzy, new cap, new rotor, new plugs and wires, i have no idea HELP!!!!

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comatoseculture
Posts: 196
Joined: Sun Oct 19, 2008 6:19 am
Car: 1990 240SX coupe. Currently running on Megasquirt.

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T in a pressure gauge and see what actual fuel pressure you have?

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nizmofxclutchgasburn
Posts: 8
Joined: Sat Jun 05, 2010 12:31 am
Car: 1992 Nissan 240sx
Location: bAy ArEa CA

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Ok a friend of mine had a pressure gauge and the pressure is good be said can't remember what it is exactly but he said it's good so we were thinking maybe it's the pressure regulator so I bought one of those we put it in and still da same it won't start I'm so confused I have no clue wat can I do next?

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comatoseculture
Posts: 196
Joined: Sun Oct 19, 2008 6:19 am
Car: 1990 240SX coupe. Currently running on Megasquirt.

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Honestly, there is no point just swapping things. You said the distributer is new? The whole distributer? Who set the timing for that? Do you feel it's possibly just outside of ideal timing?

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nizmofxclutchgasburn
Posts: 8
Joined: Sat Jun 05, 2010 12:31 am
Car: 1992 Nissan 240sx
Location: bAy ArEa CA

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Yea i know what u mean I got my friends with there opionions and they tell me get this get that so I've been listening like an idiot but I had this one friend who did the timming a while back and it was running great I replaced all those things like close to 4 months ago and it was running great it's just recently i've had this problem. The only thing I replaced just last week was the fuel press regulator so

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comatoseculture
Posts: 196
Joined: Sun Oct 19, 2008 6:19 am
Car: 1990 240SX coupe. Currently running on Megasquirt.

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Ok. I totally hear you with the friends that know exactly what to do...when it's not their money at stake. I going to try to find that tsb and think about it for a min.

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nizmofxclutchgasburn
Posts: 8
Joined: Sat Jun 05, 2010 12:31 am
Car: 1992 Nissan 240sx
Location: bAy ArEa CA

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LOl you know thank god for friends and mine are the worse cuz there honda guys so they always talk crap lol not that i hate hondas i have a integra gsr to! so let me know what you think man im gonna keep looking around hopefully theres something OOO hey do you know how to check for spark?

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nizmofxclutchgasburn
Posts: 8
Joined: Sat Jun 05, 2010 12:31 am
Car: 1992 Nissan 240sx
Location: bAy ArEa CA

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Ok so i checked my coil and there's no spark coming from the coil, so i put the new one and still no spark i don't know WTF is going on hella confused i need help peeps hit me up yo!


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