car bogging when i try to accel...... - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Drift101 · 04-17-2005, 09:52 PM

i've been having some probs with my car bogging. Anytime I step on the accel, the rpm's drop and almost stall my car, then the rpms will shoot right up again. Also, sometimes when I leave the car off and go to turn it on, it will not turn over. I have sparks and ignition, but it doesnt seem to turn over at all. I recently changed my alternator, plugs, wires, rotor, cap. I get sparks from all the plugs. Any ideas? It started happening when I replaced my alternator. Any advice or help would be GREATLY appreciated. thanks....

smithers584 · 04-17-2005, 10:24 PM

do you have any tuning products that may have dump or changed settings when you disconnected your batt? Or maybe check you connections on your alternator again, a bad connection on the ground wire or something could be causing intermittent voltages. I dont know if this applies to our cars, but i work on F-16's for a living and you would be suprised how much a bad connection could fuck with a system.

syco3d · 04-18-2005, 12:38 AM

Ok, so you have it figured that spark is working like a charm...correct?

Now how about the other two elements combining with the spark in the cylinder?

Fuel. I'd first change out the fuel filter - crappy/old/plugged fuel filter can severely limit the amount of gas your engine sees - causing 'bogging'. And yes just ONE bad tank of gas can f your fuel filter. Also check your injectors - once you're sure they are getting the proper amount of petrol to them - and make sure they are cycling right.

- don't be afraid to dump some good injector cleaner in your tank while you're sorting this all out

Air. Easily could be a problem with your MAFS. But I would rule out the fuel situation first.

O, and don't forget about pesky vaccum(sp) leaks. Those SOBs can reek havoc if there is a crack/break in the wrong line at the wrong place.

Or in other words 'bogging' can result from alot of different factors. Good luck with finding what it causing it - and don't forget to bust out the timing light and make sure that you're running at/around 20 deg.

Drift101 · 04-18-2005, 01:26 AM

yeah, i checked the fuel filter and such by disconnecting the out line and just turning the engine on, lots of gas came flowing out, so i know its not clogged or anything, but im gonna try the distributor.... and while im at it, yah, fuel injector cleaner too i guess... thanks for the ideas guys...... anything else?

dct223 · 04-18-2005, 01:37 AM

u should just change ur fuel filter anyways, only 10 bucks and its an easy swap

Drift101 · 04-18-2005, 01:47 AM

i hope i get this thing going by thursday.... my car doesnt run rught now... well.. at least no one can steal it....................

04-17-2005, 09:52 PM	#1
Drift101 Zilvia Junkie Join Date: Feb 2004 Location: East Bay Posts: 343 Trader Rating: (0) Feedback Score: 0 reviews	car bogging when i try to accel...... i've been having some probs with my car bogging. Anytime I step on the accel, the rpm's drop and almost stall my car, then the rpms will shoot right up again. Also, sometimes when I leave the car off and go to turn it on, it will not turn over. I have sparks and ignition, but it doesnt seem to turn over at all. I recently changed my alternator, plugs, wires, rotor, cap. I get sparks from all the plugs. Any ideas? It started happening when I replaced my alternator. Any advice or help would be GREATLY appreciated. thanks.... __________________ Drag racing is for fast cars. Drifting is for fast drivers.

04-18-2005, 12:38 AM	#3
syco3d Zilvia Junkie Join Date: Dec 2002 Location: Topeka, Ks Age: 41 Posts: 363 Trader Rating: (0) Feedback Score: 0 reviews	Ok, so you have it figured that spark is working like a charm...correct? Now how about the other two elements combining with the spark in the cylinder? Fuel. I'd first change out the fuel filter - crappy/old/plugged fuel filter can severely limit the amount of gas your engine sees - causing 'bogging'. And yes just ONE bad tank of gas can f your fuel filter. Also check your injectors - once you're sure they are getting the proper amount of petrol to them - and make sure they are cycling right. - don't be afraid to dump some good injector cleaner in your tank while you're sorting this all out Air. Easily could be a problem with your MAFS. But I would rule out the fuel situation first. O, and don't forget about pesky vaccum(sp) leaks. Those SOBs can reek havoc if there is a crack/break in the wrong line at the wrong place. Or in other words 'bogging' can result from alot of different factors. Good luck with finding what it causing it - and don't forget to bust out the timing light and make sure that you're running at/around 20 deg. __________________ Gimme a "A"! Gimme a "P"! Gimme a "C"! What does that spell? CRAP! Last edited by syco3d; 04-18-2005 at 12:40 AM.. Reason: I can't type

04-18-2005, 01:26 AM	#4
Drift101 Zilvia Junkie Join Date: Feb 2004 Location: East Bay Posts: 343 Trader Rating: (0) Feedback Score: 0 reviews	yeah, i checked the fuel filter and such by disconnecting the out line and just turning the engine on, lots of gas came flowing out, so i know its not clogged or anything, but im gonna try the distributor.... and while im at it, yah, fuel injector cleaner too i guess... thanks for the ideas guys...... anything else? __________________ Drag racing is for fast cars. Drifting is for fast drivers.

04-18-2005, 01:37 AM	#5
dct223 Nissanaholic! Join Date: Nov 2003 Location: hella NORCAL! Age: 39 Posts: 1,664 Trader Rating: (4) Feedback Score: 4 reviews	u should just change ur fuel filter anyways, only 10 bucks and its an easy swap __________________ Sfourteen

04-18-2005, 01:47 AM	#6
Drift101 Zilvia Junkie Join Date: Feb 2004 Location: East Bay Posts: 343 Trader Rating: (0) Feedback Score: 0 reviews	i hope i get this thing going by thursday.... my car doesnt run rught now... well.. at least no one can steal it.................... __________________ Drag racing is for fast cars. Drifting is for fast drivers.

04-17-2005, 10:24 PM	#2
smithers584 Zilvia Junkie Join Date: Dec 2004 Location: sc Posts: 416 Trader Rating: (0) Feedback Score: 0 reviews	do you have any tuning products that may have dump or changed settings when you disconnected your batt? Or maybe check you connections on your alternator again, a bad connection on the ground wire or something could be causing intermittent voltages. I dont know if this applies to our cars, but i work on F-16's for a living and you would be suprised how much a bad connection could fuck with a system.