Guests - If You want access to member only forums on HSO. You will gain access only when you sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
putter

96 gmc 1/2 ton ext 5.7 106000miles

10 posts in this topic

well this is kind of a odd one. my dad did intake gaskets on it and thats last time it would start.i checked the timing that seems to be ok,got fuel and presure at the rail [didnt check with gauge] i also checked over harness connections no bent pins or broken wires. i have power at the injector harness

with test light.we dumped fuel down the throttle plate starts and run smooth other than that the truck dont even begain to fire. any suggestions

thank you

Share this post


Link to post
Share on other sites

You need to get a fuel pressure gauge. That engine has central port injection which requires a minimum of 55 psi to start. Anything less, 54psi or lower, and it will not start.

I have also had the poppets on the end of the injectors freeze up after leaving the intake upside down during the repair. Typically only one or two will do this and typically the engine will still start/run.

The last thought is to make sure you check the fuses just to make sure you didn't inadvertently pop one.

Share this post


Link to post
Share on other sites

i checked all fuses none blown. i will bring my presure tester over test that. i was kind of thinking about the poppets my self

ive had them stick also butt it usally will start up with a mis fire code

thank you for the responce

Share this post


Link to post
Share on other sites

62 psi at the rail how long should it hold psi im assuming no mare than few sec considering it wont start

Share this post


Link to post
Share on other sites

62 psi at the rail how long should it hold psi im assuming no mare than few sec considering it wont start

It should hold that pressure in theory for days at a time. If its bleeding off right away than there is another issue that may or may not be causing the no start.

Is the snorkel on so that the MAF is reading airflow? are you sure you have all the vacuum lines/hoses hooked back up? Are you sure you have the upper intake sealed so there are no vacuum leaks. It may be worth pulling the fuel lines back out of the CPI unit to see if one of the plastic collars didn't turn sideways on you and essentially plug the fuel rail? Just some thoughts. Keep us updated!!

Share this post


Link to post
Share on other sites

had 62 psi tappered down to 58 psi dont remeber if it held at that or not i will double check that. dad pulled the upper intake off and cleaned inj tippes he said it spitts and sputters now.i looked at the vacuum lines sat am didnt see anything disconnected.you wouldnt think that all poppets froze

thank you for your posts airjer

i will keep you updated

Share this post


Link to post
Share on other sites

Running pressure and holding pressure will be two different numbers. 62 to 58 drop would be perfectly normal as long as it holds at 58. If it went from 62 to 0 in a minute or so then there is a problem.

I guess the next thing you could do is pull the upper plenum, Remove the poppets from the lower intake, Unplug the coil, plug in the CPI, hook up the fuel rail, and crank it over to see if the poppets are spraying fuel.

I do for some reason remember getting a call from a guy who worked at our hastings location a few years ago. he had the same problem after doing an intake (crank no start) and if I remember correctly he ended up replacing all eight poppet's/injectors. Obviously that is not going to be cheap so I would recommend getting a professional opinion (check data with scan tool and confirm signal to injectors) first.

Share this post


Link to post
Share on other sites

i had my dad crank the engine over to see if fuel was spraying out last night no fuel butt i dont know if he plugged it in.

its going on 5yrs since i worked on that engine and living a hour away with 4 kids also working nights has a diesle tech.im trying to walk him through the steps my hand held or the shops wont check gas engine data signal. iwill call him in the am

ask him if he remembers pluging cpi back in. how would i now what direction the plastic collars need to face in cpi idont see it the chevy c/k manual

Share this post


Link to post
Share on other sites

The plastic collars in the CPI where the fuel lines go in are there to space the o-rings that seal the fuel lines. It doesn't matter which way they go in.

Share this post


Link to post
Share on other sites

parts came in today replaced all 8 injectors fired up first try

talk about bad luck having all eight go out

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  
Followers 0



  • Posts

    • Helps when I comprehend what I read.  I actually just cut the handle off my tongue jack on my Yetti and welded on 3/4 nut too.  My M18 drill with 1,200 in-lbs (2704-20) and it has no problem raising or lowering the tongue.  Biggest thing I noticed was making sure my drill was on the #1 low speed setting.      As far as torque goes and harming your auger.  I think you are totally fine and shouldn't harm anything.  The max amount that these K-Drills and Clam plates are drilling these days with the big drills are 8".  Most sized augers these days have no problem turning a 10" auger which is nearly twice as large of an area than an 8" auger.  Being 2 strokes can normally operate in any orientation without being damaged the only concern I would have would be your gears and any shifting of grease inside operating the auger head on its side under load.    They say Ions will do 10" holes but after I talked to their customer service reps about it, I wouldn't trust an Ion with a 10" more than I do a wet fart.  Just the fact that they don't even sell a 10" package indicates there could possibly be issues with torque and reliability when operating the 10" auger "accessory".  For now I'd just stick to your strike master going up and save your Ion any extra wear and tear.  Maybe even ask Santa for some electric jacks this Christmas
    • As the media begins to draw a pretty picture about the November jobs report, namely that unemployment has dropped to 4.6 percent, its lowest level in nine years, they are unlikely to tell you the other part of the story. The labor force participation rate continues to decline and is stuck at a rate we haven't seen since February 1978, according to the Bureau of Labor Statistics.  It gets worse. Last month, we lost 4,000 manufacturing jobs, offering more damage to the already 301,000 we've lost since President Obama took office. - Town Hall   See for yourself.. U.S. Dept of Labor / BLS Date Viewer   Whaaa ???   OH, MY....  
    • I wouldn't do that for each one. I was wondering if you couldn't cut a winch down, or maybe just leave it as is, so you could attach a drill to the low speed post and tack weld/rig a socket or something for the other side and just hold it in your hand. It probably won't work because it sounds too easy. 
    • My, such big words!! Yer a talented liddle Smurf, aintcha? We might as well get to work doin' what we were accused of, munchkin!!! Like Carly Simon said, "no one does it better"....  
    • i,ve been falsey accused of inproprieties!!!!!!!!!!!
    • Ken W, I have that book too. Before the internet it was really tough to find info. about sausage making. I never had luck getting a tangy flavor using Fermento. The sausage was very good though.
    • Jacks work very smooth, fresh grease and by hand feels fine for the amount of weight.  I think for the winter we'll just use the gas auger up and the hand drill down.  I don't want to sink another penny into these darn jacks if I can help it, should be swapping out by next year.  I may look into the gear reduction but I feel like trying to throw one of them on each of the jacks could add another 100 that could go toward electric.  leech if you ever stumble on that video post the link so I can see what hes doing different.  Works great on the tongue when it can pivot on the wheels but when lifting the full weight of the house at the back two jack points it just doesnt cut it.
    • I wondered about that when you were building the house. I think you will have to go electric jacks unless you can figure a gear reduction box of some kind. That might be easier than it sounds with some thinking (I hope). Could you mickey mouse the guts of a 2 speed winch? That's a simple gear reduction. Leech, that would have to be a gear reduction box of some kind, right?
  • Our Sponsors