bad misfire t2 streetport help please!?!?!?!

rotaryguy481 · 04-08-2010, 09:46 PM

I don't know what is going on with it the compression is good but it has a bad miss fire that I can't figure out at all from start then it dies and floods?????????

12arotary · 04-08-2010, 10:18 PM

stuck injector? fouled plugs? bad ground?

rotaryguy481 · 04-08-2010, 10:27 PM

Would pre mixing to much oil clog the injectors

RETed · 04-08-2010, 10:49 PM

How much is too much?
Got pics of the plugs?

-Ted

reaper · 04-08-2010, 11:05 PM

agreed, pics of plug would help.

rotaryguy481 · 04-08-2010, 11:27 PM

I will post some up tomorrow and they got a lot of black gunk on them pretty bad and its only got alil over 2000 miles on the motor

Justen · 04-09-2010, 12:15 AM

I would make a code reader if I were you. Turned out to be the best 5 bucks i ever spent.
I had a similar problem, just rebuilt my turboII motor, streetport... It started up but flooded and backfired like a bitch.

Mine threw a code saying there was a problem with my thermosensor (on the back of the water pump). When the sensors bad or the circuit is cut, the ecu dumps fuel into the motor as a "fail-safe" so you don't detonate, no matter what your temps actually are. I fixed that, and my car ran better than it did before the rebuild, streetport, and emissions removal... go figure

It could be that, your throttle position sensor, bad injectors, or something else.
I can't pinpoint it, but a code-reader could definitely narrow down the possibilities for ya

RETed · 04-09-2010, 05:23 AM

Are these the original spark plugs you used on break-in?
If so, then a lot of the crap is from the blow-by from the engine breaking in.
I recommend swapping to a new set of plugs after the initial break-in period if the break-in plugs are no good.

-Ted

rotaryguy481 · 04-09-2010, 10:10 AM

How do I make the code reader for it lol I think I know where to plug it in at but just incase where it be

rotaryguy481 · 04-09-2010, 10:39 PM

Got the miss fire fixed to where it idles and revs but now its alil slugish and pops ocationally don't now what it be

rotaryguy481 · 04-10-2010, 03:29 PM

How do I make a code reader for it

04-08-2010, 09:46 PM	#1
rotaryguy481 Rotary Fan in Training Join Date: Jan 2010 Location: Fort Worth TX iTrader: (0) Posts: 74 Rep Power: 15	bad misfire t2 streetport help please!?!?!?! I don't know what is going on with it the compression is good but it has a bad miss fire that I can't figure out at all from start then it dies and floods?????????

04-08-2010, 10:18 PM	#2
12arotary tumor-syphilis-itis-osis Join Date: Sep 2008 iTrader: (0) Posts: 191 Rep Power: 17	stuck injector? fouled plugs? bad ground? __________________ 82 300d 82 Gsl 84 b2200 Diesel 88 gxl

04-08-2010, 11:05 PM	#5
reaper 2slow4u Join Date: Dec 2009 Location: Las Vegas iTrader: (0) Posts: 18 Rep Power: 0	agreed, pics of plug would help. __________________ my hoarse is amazing sincityrotary.com a place for las vegas rotary enthusiasts

04-09-2010, 12:15 AM	#7
Justen In Too Deep Join Date: Jun 2009 Location: Clifton, NJ iTrader: (3) Posts: 112 Rep Power: 16	I would make a code reader if I were you. Turned out to be the best 5 bucks i ever spent. I had a similar problem, just rebuilt my turboII motor, streetport... It started up but flooded and backfired like a bitch. Mine threw a code saying there was a problem with my thermosensor (on the back of the water pump). When the sensors bad or the circuit is cut, the ecu dumps fuel into the motor as a "fail-safe" so you don't detonate, no matter what your temps actually are. I fixed that, and my car ran better than it did before the rebuild, streetport, and emissions removal... go figure It could be that, your throttle position sensor, bad injectors, or something else. I can't pinpoint it, but a code-reader could definitely narrow down the possibilities for ya __________________ 1990 TII, fresh rebuild Atkins rebuild kit, RA apex seals Med. Streetport, TB mod, rebuilt turbo, ported wastegate, GodSpeed FMIC RacingBeat Turbo-back straight exhaust, Bonez test pipe, emissions/nest removed hks intake, Walbro, Profec B spec-2

04-08-2010, 10:27 PM	#3
rotaryguy481 Rotary Fan in Training Join Date: Jan 2010 Location: Fort Worth TX iTrader: (0) Posts: 74 Rep Power: 15	Would pre mixing to much oil clog the injectors

04-08-2010, 11:27 PM	#6
rotaryguy481 Rotary Fan in Training Join Date: Jan 2010 Location: Fort Worth TX iTrader: (0) Posts: 74 Rep Power: 15	I will post some up tomorrow and they got a lot of black gunk on them pretty bad and its only got alil over 2000 miles on the motor

04-09-2010, 10:10 AM	#9
rotaryguy481 Rotary Fan in Training Join Date: Jan 2010 Location: Fort Worth TX iTrader: (0) Posts: 74 Rep Power: 15	How do I make the code reader for it lol I think I know where to plug it in at but just incase where it be

04-09-2010, 10:39 PM	#10
rotaryguy481 Rotary Fan in Training Join Date: Jan 2010 Location: Fort Worth TX iTrader: (0) Posts: 74 Rep Power: 15	Got the miss fire fixed to where it idles and revs but now its alil slugish and pops ocationally don't now what it be

04-10-2010, 03:29 PM	#11
rotaryguy481 Rotary Fan in Training Join Date: Jan 2010 Location: Fort Worth TX iTrader: (0) Posts: 74 Rep Power: 15	How do I make a code reader for it