2.7" pulley and spark blow outs with a gap of 0.32 ???
08-06-2011, 08:25 PM
#1
Member
Thread Starter
2.7" pulley and huge spark blow outs and hesitations???
Wow that is what I didn't expect...
I just diminished the gap of my spark plugs to 0.032 and I still had a spark blow out during a pull.
Wow... will I have to gap them to 0.028? LOL
That is insane!
I KNOW I DID A TYPO IN THE TITLE... I WROTE 0.32 instead of 0.032...
UPDATE: Now I'm getting far more in trouble. Those 2 videos I posted in this thread are self explanatory:
‪Big hesitations under boost‬‏ - YouTube
‪Spark Plugs gap - Gapping tools‬‏ - YouTube
I just diminished the gap of my spark plugs to 0.032 and I still had a spark blow out during a pull.
Wow... will I have to gap them to 0.028? LOL
That is insane!
I KNOW I DID A TYPO IN THE TITLE... I WROTE 0.32 instead of 0.032...
UPDATE: Now I'm getting far more in trouble. Those 2 videos I posted in this thread are self explanatory:
‪Big hesitations under boost‬‏ - YouTube
‪Spark Plugs gap - Gapping tools‬‏ - YouTube
Last edited by firepinch; 08-08-2011 at 02:27 PM.
08-07-2011, 05:02 AM
#4
Member
Thread Starter
I get a big hesitation, like when you hit the cut-off. This happen most of the time around 6600-6700 rpm. My redline is at 7400 rpm but I rarely get there, I usually shift at 7200 and 7000 at the end of 3rd gear because I know that the stock valve train doesn't like it passed 7200.
08-07-2011, 05:10 AM
#6
Member
Thread Starter
Can't wait to see what the phenolic spacer will do to me, I will have it this week!
08-07-2011, 07:56 AM
#7
Setting a .028 gap isn't that big of a deal... but I think you've got other issues somewhere. Is your Intercooler pump dead? I don't know that I ever saw IAT2's that high, with IAT1's that low, while having a working pump. And I always had a stock cooling system, minus that last few months that I added the Stu Mod. Its been almost 3 years since I had a S/C on the car, though... and my memory isn't the greatest.
08-07-2011, 11:06 AM
#8
Senior Member
on a 2.9 I saw right at 150 IAT2'S on a 90+ day. With only a ZZP S3 H/E and it was not bled out all the way. I am dropping to a 2.7 soon, but not until I get a dual pass and get my E on.
08-07-2011, 01:48 PM
#9
Member
Thread Starter
Setting a .028 gap isn't that big of a deal... but I think you've got other issues somewhere. Is your Intercooler pump dead? I don't know that I ever saw IAT2's that high, with IAT1's that low, while having a working pump. And I always had a stock cooling system, minus that last few months that I added the Stu Mod. Its been almost 3 years since I had a S/C on the car, though... and my memory isn't the greatest.
08-07-2011, 10:37 PM
#10
Member
Thread Starter
I'm gonna try 0.028 tonight to see what I get.
I just did some test pulls and now my car isn't even able to get passed 4500 rpm wide open throttle. It bucked terribly and I had to stop depressing on the gas pedal. Gap was at 0.032 but the day before, I did some pulls and I didn't have that problem.
My AFR is stable during a part throttle pull so I don't see why I would have a defective injector.
I get an average of 8 to 14 misfires during idle... Before when I was gapped at 0.40, misfires went up to 32 at idle. Looks like diminishing the gap reduce misfires when the car idles!
I'm so confused... I don't know anymore how to gap my spark plugs.
I will try 0.028 and see what I get.
I just did some test pulls and now my car isn't even able to get passed 4500 rpm wide open throttle. It bucked terribly and I had to stop depressing on the gas pedal. Gap was at 0.032 but the day before, I did some pulls and I didn't have that problem.
My AFR is stable during a part throttle pull so I don't see why I would have a defective injector.
I get an average of 8 to 14 misfires during idle... Before when I was gapped at 0.40, misfires went up to 32 at idle. Looks like diminishing the gap reduce misfires when the car idles!
I'm so confused... I don't know anymore how to gap my spark plugs.
I will try 0.028 and see what I get.
08-07-2011, 10:53 PM
#12
Member
Thread Starter
Hmmm I didn't think about that... good idea. Do you know how to test it out? I don't know... testing the output voltage of the pump or anything that can be monitored with whatever tool?
08-07-2011, 10:59 PM
#14
Member
Thread Starter
Hmmm good question, when this cut out I was like shocked and didn't think right away to look at my AFR. Before changing my gap I can do another test pull to watch this. But logically, if the car cut off, my AFR was certainly like infinity!
How do you measure the fuel pressure? I'm actually doing some google searches for that... but I'm wondering at this moment how we can do this with our cars...
How do you measure the fuel pressure? I'm actually doing some google searches for that... but I'm wondering at this moment how we can do this with our cars...
08-07-2011, 11:01 PM
#15
Member
Thread Starter
Oh... if you talk about the fuel pump... this could be the fuel pump relay too? It has to do something with the fuel pump so... who knows...
Update: I just did some research and I found out a nice video on Youtube: http://www.youtube.com/watch?v=piOzN...eature=related.
But it doesn't seem like this could be related to the problem I have... But if the pump is dying slowly, this could be. I have something to monitor the pressure of air but I don't know if this can work with fuel. I guess I will need a specific tool... like a fuel pressure gauge...
Update: I just did some research and I found out a nice video on Youtube: http://www.youtube.com/watch?v=piOzN...eature=related.
But it doesn't seem like this could be related to the problem I have... But if the pump is dying slowly, this could be. I have something to monitor the pressure of air but I don't know if this can work with fuel. I guess I will need a specific tool... like a fuel pressure gauge...
Last edited by firepinch; 08-07-2011 at 11:16 PM.
08-07-2011, 11:16 PM
#16
Hmmm good question, when this cut out I was like shocked and didn't think right away to look at my AFR. Before changing my gap I can do another test pull to watch this. But logically, if the car cut off, my AFR was certainly like infinity!
How do you measure the fuel pressure? I'm actually doing some google searches for that... but I'm wondering at this moment how we can do this with our cars...
How do you measure the fuel pressure? I'm actually doing some google searches for that... but I'm wondering at this moment how we can do this with our cars...
You measure fuel pressure with a fuel pressure gauge.
Hooked up to the schrader valve that's on the fuel line that connects to the fuel rail. If you are on a stock fuel system (Pump and regulator) then you should be at 60psi, +/- 2 or 3.Doubt it. With a relay, afaik, it either works, or it doesn't.
08-07-2011, 11:26 PM
#18
Senior Member
I get a big hesitation, like when you hit the cut-off. This happen most of the time around 6600-6700 rpm. My redline is at 7400 rpm but I rarely get there, I usually shift at 7200 and 7000 at the end of 3rd gear because I know that the stock valve train doesn't like it passed 7200.
Weak valvespring? Maybe your tach is lagging some and when your at 7000 your really at 7200?
08-07-2011, 11:52 PM
#20
Member
Thread Starter
Dying fuel pump... yeah, me and my frenglish LOL!
Well guys, thanks for responding! I just took a video of my problem so now everything will be clearer.
Finally, my AFR was RICH when the car stuttered... so this is maybe not the fuel pump.
I'm gonna upload it and update my post soon! You'll see better guys...
UPDATE: Here is the video I've made for you below! At the beginning, I just stayed there without doing anything during 10-15 sec or so, so you can see my AFR, and my misfires when the car is idling. After, I just go on the road and do my little pull. You can clearly see the knock and misfires in my Interceptor gauge. No knocks so far, and 12-16 misfires at idle and at the end when I stop to depress the gas pedal because I was jerking so much! Again, I have those NGK BKR-7E gaped at 0.032.
http://www.youtube.com/watch?v=p1xnGQ21NX8
Well guys, thanks for responding! I just took a video of my problem so now everything will be clearer.
Finally, my AFR was RICH when the car stuttered... so this is maybe not the fuel pump.
I'm gonna upload it and update my post soon! You'll see better guys...
UPDATE: Here is the video I've made for you below! At the beginning, I just stayed there without doing anything during 10-15 sec or so, so you can see my AFR, and my misfires when the car is idling. After, I just go on the road and do my little pull. You can clearly see the knock and misfires in my Interceptor gauge. No knocks so far, and 12-16 misfires at idle and at the end when I stop to depress the gas pedal because I was jerking so much! Again, I have those NGK BKR-7E gaped at 0.032.
http://www.youtube.com/watch?v=p1xnGQ21NX8
Last edited by firepinch; 08-08-2011 at 12:47 AM.
08-08-2011, 04:25 AM
#21
bump for more info my car just started doing this also. pulled injectors and cleaned them off, plugs looked okay [stock gap]..
going to pull the injectors and soak them in gas im thinking maybe the E might have clogged one of them, then maf/tb. damn i hate these cars hah.
going to pull the injectors and soak them in gas im thinking maybe the E might have clogged one of them, then maf/tb. damn i hate these cars hah.
08-08-2011, 12:49 PM
#23
Member
Thread Starter
Nop... not yet! Maybe I'm gonna have to start a new thread because those big hesitations I just got, I didn't get them when I started my thread. Well... not as much as now! My car began to act like in my video really yesterday!
