Nothing left to check? VP 5.7GSI wont start - good fuel pressure, good ecm, wiring
#171
Registered
Thread Starter
Join Date: May 2015
Posts: 241
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
BUP and SB, thank you so much. It looks like Rock Auto was wrong then on my injector part numbers. I checked the part number you sent me, and it didn't match the Standard TJ11 list of compatible injectors. They are apparently flow rated at 90.77 lbs, which is less than the black/yellows? I am 99% sure my engine is running rich though, so I'm not sure I am on the right path yet.
Maybe I should put it in the water tonight and do a few runs to see if it seems lean under load. It runs like crap, but it runs.
SB - are you able to get those injectors? Your inbox is full btw, I wanted to pm you about paying for them.
Maybe I should put it in the water tonight and do a few runs to see if it seems lean under load. It runs like crap, but it runs.
SB - are you able to get those injectors? Your inbox is full btw, I wanted to pm you about paying for them.
#172
Registered
![Default](/forums/images/icons/icon1.gif)
BUP and SB, thank you so much. It looks like Rock Auto was wrong then on my injector part numbers. I checked the part number you sent me, and it didn't match the Standard TJ11 list of compatible injectors. They are apparently flow rated at 90.77 lbs, which is less than the black/yellows? I am 99% sure my engine is running rich though, so I'm not sure I am on the right path yet.
Maybe I should put it in the water tonight and do a few runs to see if it seems lean under load. It runs like crap, but it runs.
SB - are you able to get those injectors? Your inbox is full btw, I wanted to pm you about paying for them.
Maybe I should put it in the water tonight and do a few runs to see if it seems lean under load. It runs like crap, but it runs.
SB - are you able to get those injectors? Your inbox is full btw, I wanted to pm you about paying for them.
#173
Registered
![Default](/forums/images/icons/icon1.gif)
Schweet. In my notes about the black/yellows:
=================================
25170301
61 pph @ 13 psi
NOTE: used on some marine engines at 26-32psi
100 pph @ 30 psi
=================================
Now, the common 5.7 truck/car injectors are the 5235206's (orange/black) whuch typically flow near/at the 61pph at 13psi too.
More tomorrow. I just came in, saw the email with response by BUP, and my mind got triggerred. It happens, lol. Had to respond before I forgot.
Oh, BTW: #'s I have listed above ae what are stamped on top of tbi injectors
=================================
25170301
61 pph @ 13 psi
NOTE: used on some marine engines at 26-32psi
100 pph @ 30 psi
=================================
Now, the common 5.7 truck/car injectors are the 5235206's (orange/black) whuch typically flow near/at the 61pph at 13psi too.
More tomorrow. I just came in, saw the email with response by BUP, and my mind got triggerred. It happens, lol. Had to respond before I forgot.
Oh, BTW: #'s I have listed above ae what are stamped on top of tbi injectors
So.......5206's may not work at higher psi's.....say's GM's reason for other high psi injectors....but I know a few people that have run there low psi injectors higher than even the 30psi's of the boat app's and 94/95 7.4L trucks. Lucky ? I dunno.
Best bet in your case of course, run what is supposed to be in there. Which you are trying to do.
#174
Registered
![Default](/forums/images/icons/icon1.gif)
I believe this to be the base gasket for your app to use - Is it what you have installed ?
![](http://static.summitracing.com/global/images/prod/large/fel-60954_w.jpg)
#175
Banned
![Default](/forums/images/icons/icon1.gif)
Here is the OEM set up - have no idea if your app is 100 % stock set up
This is the best I can do for posting OEM info trying to find it on the net.
http://ww2.justanswer.com/uploads/Ha..._193116_01.png
This is the best I can do for posting OEM info trying to find it on the net.
http://ww2.justanswer.com/uploads/Ha..._193116_01.png
Last edited by BUP; 05-17-2015 at 12:01 PM.
#176
Registered
Thread Starter
Join Date: May 2015
Posts: 241
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
I am going to put it in this afternoon to see if it feels lean or rich. I honestly don't mind if I have to throw money at a few injectors, I just want to fix it lol!
What is the availability of the injevtors you mentioned?
#177
Registered
![Default](/forums/images/icons/icon1.gif)
See post #172 and read it. He go one of those sets and is all set.
He provided same link as you. Question is which of the 3 rockauto injectors did he chose ?
I'm home and going back out in the yard and then off to dump + family get together. Plus, I'm on home computer that doesn't have much info stoed on it.
Basically, no guaantees if I can find those injectors today.
We'll see.
He provided same link as you. Question is which of the 3 rockauto injectors did he chose ?
I'm home and going back out in the yard and then off to dump + family get together. Plus, I'm on home computer that doesn't have much info stoed on it.
Basically, no guaantees if I can find those injectors today.
We'll see.
#178
Registered
Thread Starter
Join Date: May 2015
Posts: 241
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
Now I'm not sure if they are right. I'm going to look at the numbers on them if I can still read them.
#179
Registered
Thread Starter
Join Date: May 2015
Posts: 241
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
Well I have a confirmed lean condition as far as I'm concerned. I replaced the IAT sensor, and still have the same cold start problem. I poured some fuel in the intake, bam fired right up, ran for 30 seconds, stalled, then restarted with two attempts. Still horrible hesitation when revving on land. I'm getting ready to put it in the water. At this point I would rwther work on it in the water. I can't See any part numbers on my original injevtors either.
Idk what to do guys? Should we just try the other two injectors from rock auto? The part number SB listed for a yellow/black injector seems available in some places still, but one of the numbers crosses back to the TJ11's I have.
Should I just buy the scan tool now?
Idk what to do guys? Should we just try the other two injectors from rock auto? The part number SB listed for a yellow/black injector seems available in some places still, but one of the numbers crosses back to the TJ11's I have.
Should I just buy the scan tool now?
#180
Registered
Join Date: May 2015
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
Hi nunn you sure are complicating thing's...Could you post the id number on your old injector's it seem's you have a modifyed 5.7 going on there. Could you also post a pic of the port for that intake temp sensor. Who changed out the mefi3 to 4 do you know this whole setup is odd i believe the orignal map sensor already acts as a IAT.