Bucking under load?? Need help asap please

TS87FC3S · 03-19-2010, 08:42 PM

88 gxl, random miss at idle but revs out fine with no load on engine. but once in gear going down the road the car bucks ALOT! what can cause this?

Fuel Filter New, Decent Plugs.

This started happening after a 7k 1-2, 7k 2-3 then decel, this is when it first started occuring??

Im in illinois with the car need to get it back to missouri tomorrow!!

Kentetsu · 03-19-2010, 10:30 PM

I was going to ask about spark plugs, but I guess you've got that covered. Any charging issues, like maybe the alternator going out on you? Or bad grounding of the motor maybe.

Other than that, I guess you'll have to look at fuel delivery issues, and I'm a carb guy so I'll wish you good luck.

.

RETed · 03-20-2010, 12:05 AM

Tps?

TS87FC3S · 03-20-2010, 09:04 AM

Actually I Am having charging issues the parts stores tell me the alternator is good but on the car it is only putting out like 12.6v new battery, it also when I go to start it it just clicks even though battery has full voltage it has to be jumped... I'm gonna recheck plugs and try to find specs to check gps and other sensors, and check fuel system

Anything else I should check

Kentetsu · 03-22-2010, 11:15 AM

Battery cables and connections at both ends. lol, who says carb guys don't know crap?

TS87FC3S · 03-29-2010, 07:29 PM

Dropped the fuel tank and cleaned it, changed the filter, cleaned plugs and added engine and body grounds car runs perfect now.. Good enough to get a good sized speeding ticket

03-19-2010, 08:42 PM	#1
TS87FC3S Ask Me About My WANKEL!!! Join Date: Jan 2010 Location: Missouri iTrader: (1) Posts: 127 Rep Power: 15	Bucking under load?? Need help asap please 88 gxl, random miss at idle but revs out fine with no load on engine. but once in gear going down the road the car bucks ALOT! what can cause this? Fuel Filter New, Decent Plugs. This started happening after a 7k 1-2, 7k 2-3 then decel, this is when it first started occuring?? Im in illinois with the car need to get it back to missouri tomorrow!! __________________ 1984 Rx7 Gs - stripped interior re speed coil overs, tokico blues, re speed crossmemeber and mustang rack, diamond star racing wheels 1988 Rx7 Se - Sold 1988 Rx7 GXL - Sold Last edited by TS87FC3S; 03-19-2010 at 09:15 PM..

03-19-2010, 10:30 PM	#2
Kentetsu RCC Contributor Join Date: Feb 2008 Location: Grand Rapids, Michigan iTrader: (1) Posts: 530 Rep Power: 17	I was going to ask about spark plugs, but I guess you've got that covered. Any charging issues, like maybe the alternator going out on you? Or bad grounding of the motor maybe. Other than that, I guess you'll have to look at fuel delivery issues, and I'm a carb guy so I'll wish you good luck. . __________________ "Learn from the past, or it will become your future...." '85 GS 12a + LSD/Sterling carb/Respeed coilovers/Respeed front swaybar/Respeed adj. rear spring perches/Illuminas/Bilsteins on rear AutoX vids @ http://www.youtube.com/user/Kentetsu1

03-20-2010, 09:04 AM	#4
TS87FC3S Ask Me About My WANKEL!!! Join Date: Jan 2010 Location: Missouri iTrader: (1) Posts: 127 Rep Power: 15	Actually I Am having charging issues the parts stores tell me the alternator is good but on the car it is only putting out like 12.6v new battery, it also when I go to start it it just clicks even though battery has full voltage it has to be jumped... I'm gonna recheck plugs and try to find specs to check gps and other sensors, and check fuel system Anything else I should check __________________ 1984 Rx7 Gs - stripped interior re speed coil overs, tokico blues, re speed crossmemeber and mustang rack, diamond star racing wheels 1988 Rx7 Se - Sold 1988 Rx7 GXL - Sold

03-29-2010, 07:29 PM	#6
TS87FC3S Ask Me About My WANKEL!!! Join Date: Jan 2010 Location: Missouri iTrader: (1) Posts: 127 Rep Power: 15	Dropped the fuel tank and cleaned it, changed the filter, cleaned plugs and added engine and body grounds car runs perfect now.. Good enough to get a good sized speeding ticket __________________ 1984 Rx7 Gs - stripped interior re speed coil overs, tokico blues, re speed crossmemeber and mustang rack, diamond star racing wheels 1988 Rx7 Se - Sold 1988 Rx7 GXL - Sold

03-22-2010, 11:15 AM	#5
Kentetsu RCC Contributor Join Date: Feb 2008 Location: Grand Rapids, Michigan iTrader: (1) Posts: 530 Rep Power: 17	Battery cables and connections at both ends. lol, who says carb guys don't know crap?