black smoke

mrwackmbuck · 03-10-2010, 11:36 PM

help..i have an 89 b2 2.9.i replace the fuel pump,regulator,coil,and ecm..all my plugs are black and it will not run if i pull the fude for the pump it will run ok till the fuel runs out
thanks

MrShorty · 03-11-2010, 09:53 AM

I hate to be a jerk, but this really needs some punctuation. I can't tell if this should be "all my plugs are black and it will not run if I pull the fu[s]e for the pump. It will run ok till the fuel runs out." or if you mean "all my plugs are black and it will not run. If I pull the fuse for the pump, it will run ok till the fuel runs out." I'm having a hard time picturing what it is actually doing in either case.

Black smoke and black plugs suggest to me that it is running rich when it does run. You say that you've replaced the regulator, but have you ever put a fuel pressure gauge on it? That's probably the first thing I'd do.

03-10-2010, 11:36 PM	#1
mrwackmbuck Wannabe Elite Explorer martinsburg pa 89 bronco ll Join Date: Mar 2010 Posts: 7 Vehicle Specs (Original Poster)	black smoke help..i have an 89 b2 2.9.i replace the fuel pump,regulator,coil,and ecm..all my plugs are black and it will not run if i pull the fude for the pump it will run ok till the fuel runs out thanks

03-11-2010, 09:53 AM	#2
MrShorty Wannabe Elite Explorer Spanish Fork, UT 92 XLT and '87 Bronco II Join Date: Dec 2001 Posts: 4,934 Vehicle Specs	I hate to be a jerk, but this really needs some punctuation. I can't tell if this should be "all my plugs are black and it will not run if I pull the fu[s]e for the pump. It will run ok till the fuel runs out." or if you mean "all my plugs are black and it will not run. If I pull the fuse for the pump, it will run ok till the fuel runs out." I'm having a hard time picturing what it is actually doing in either case. Black smoke and black plugs suggest to me that it is running rich when it does run. You say that you've replaced the regulator, but have you ever put a fuel pressure gauge on it? That's probably the first thing I'd do. __________________ Mr. Shorty 92 XLT 4x4 87 Bronco II XLT 4x4 '98 Chev K1500 Suburban SLT 4x4