Head change, truck runs like sh*t
- Thread starter spdrcrj
- Start date
bigike said:
The rocker assy's dont look like this. Just one bolt in the middle of the stock rocker screwing it into the pedestal. The springs would compress differently as I slowly torqed the bolts depending on the cylinder I was working on. What do you mean "run" the valves?
I should have known better than to do this. I thought it was as easy as following the instructions in the service manual.
'preciate the support. I'm reading these guys posts about lashing, running valves, and adjusting things and getting concerned. I did the swap according to the manual to a "T" and it mentioned nothing about this stuff. From what I can see and tested, everything looks normal so I'm hoping tune. Gonna take it for a couple mile drive and do the water on the header test to see if I have a dead cylinder. My Diablo Predator hand held used to show data as the motor was running. Wish my SCT did that so I could monitor it.
bigike
Full Access Member
Running the valves is a term used when adjusting the valves on a adjustable engine. Stock ours are not adjustable so you ought to be good.
Did you do a compression test yet and or make sure every cylinder is firing?
Did you do a compression test yet and or make sure every cylinder is firing?
bigike said:
Dont have a way to do a compression test. How do you test cylinder firing? I know there's a way with a screwdriver and unplugging the spark plug boot. Did the water test and it hissed and evaporated immediately on the passenger side. On the driver side, the drop of water actually sat on 5,7,9 header. After a couple of mins, sat on 1 and 3 too. This is why I want to do the screwdriver test, to be sure. Just kicked a system rich code (0175) too.
bigike
Full Access Member
Your not firing on all cylinders. Do you have infared temp gun. It does the same thing as the water but it would give you a actual temp.
You can buy a compression tester at any auto shop for 15 dollars. You unscrew a spark plug, install the tester, disable the ignition and rotate the engine for 5 seconds and record the reading.
Recheck the valves on the drivers side.
A screwdriver in the wire will show you the coil is firing that cylinder. A better way is to buy a sparkplug tester.
You can buy a compression tester at any auto shop for 15 dollars. You unscrew a spark plug, install the tester, disable the ignition and rotate the engine for 5 seconds and record the reading.
Recheck the valves on the drivers side.
A screwdriver in the wire will show you the coil is firing that cylinder. A better way is to buy a sparkplug tester.
spdrcrj said:Yes sir, it does. Just pulled a few spark plugs. I'll take a photo in a min. I can tell you, #1, #3, and #5 are BLACK with dry soot. Going back out to pull them all.
Here's the photo of the plugs:
check for a pinched injector wire somewhere bo, and are you using the vec or STS, looks like one complete side is jsut flooding.
Injectors look stuck wide open
smell the oil dipstick see if it smells like fuel
also you can go to autozone and get a plug tester to test to see if its firing.
I dont think you have a compression problem
Think of it this way Jim,, dont be pissed, you are learning, and learning the best way my man:rock: :rock: :rock: :rock: :rock: :rock:
Stinker said:
Like Stinker said... good advice there...
Things don't always go great even when people are very familiar with the work they are doing so no point in beating yourself up. When you find the problem (and you will) all will be good again. It is just a mechanical thing so be methodical and patient. As suggested, make sure you don't have a pinched cable between the head and intake, which is why I suggested 2 people are watching when you lower that thing back on.
Your driver's side is getting way too much fuel and/or has an ignition failure of some kind.
I have seen heads come out of machine shops that had guides installed on one whole side that were improperly machined and the valves opened and stayed open. I don't think it is the case here but only mentioned it as a point of reference because the heads are what you changed.
Good luck
Ron
No pinched wires Stink. I took Ron's advice and I lowered the intake while my partner watched for anything that could get in the way of a good seal. I currently have the valve cover off, everything looks good. Gonna take come pushrods out to make sure they are not bent at all and re-torque the rockers. After that, will run to autozone to get the plug tester like you guys suggest. Think the motor is ok to run on "limp mode"? I have no other vehicles.
Just removed a pushrod from each of the drivers cylinders, all are good. Re-torqed rockers and putting the valve cover back on. Gonna re-install all plugs and test 1,3,and 5 for spark.
Stink, I'm running a SCT but it would not run on even Roe's low tune. The truck is now on the stock tune.
Just removed a pushrod from each of the drivers cylinders, all are good. Re-torqed rockers and putting the valve cover back on. Gonna re-install all plugs and test 1,3,and 5 for spark.
Stink, I'm running a SCT but it would not run on even Roe's low tune. The truck is now on the stock tune.
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spdrcrj said:
I wouldnt, if the injectors are open you would wash the cylinders and bearings down with fuel . has ya buddy got a ride?
if you cant go anywhere, take a 6-8 inch screw driver
(oh crap Jim is really gonna love this) stick the end of the driver in the plug boot, then hold it about a 1/8th inch from a ground, have your friend turn over the engine, you should here the "pop" or see the arc of the wire.
oh , guess you should wear gloves tooLOLOLOL
Think about it like you would your job Jim, I have spoken with you many times, and you really impress me on how you do things:rock:
So step back , go over every step , one by one remembering what you did, double check and triple check slowly.
go over al th wires once again, you could miss something even on the third look
If all this seems to check out , like ronnie says, you may need to get a way to the store, get a compression checker and check for leakdown, jsut dont see that tho, I really think you are jsut excited, and pissed, and are overlooking something
Geez Ronnie, uh sounds like we have done this huh?
Stinker said:Geez Ronnie, uh sounds like we have done this huh?
Yup, maybe just a time or 2(000)
Off to the dyno in a couple of hours to see if we can blow up/baseline a new GT500 Shelby.
Then install parts for another 120 wheel. I thought we were supposed to "rest" on a long weekend. Yeah, right.And on a pure entertaining level...
Following a buddies new Ford GT40 in his Viper and he nailed it. The Viper hung in for a surprisingly long time then the '40 pulled away and he said he hit 200 m.p.h. I didn't know they would go that fast but the Viper started to look pretty lame with the '40 WAY in the lead. I'm trying to talk him into Strikers for his Viper to help it out...
Thanks to all for helpin' Jim out.. He'll figure it out...
Ron
supercar1of1
Full Access Member
rottenronnie said:Yup, maybe just a time or 2(000)
Off to the dyno in a couple of hours to see if we can blow up/baseline a new GT500 Shelby.
And on a pure entertaining level...
Following a buddies new Ford GT40 in his Viper and he nailed it. The Viper hung in for a surprisingly long time then the '40 pulled away and he said he hit 200 m.p.h. I didn't know they would go that fast but the Viper started to look pretty lame with the '40 WAY in the lead. I'm trying to talk him into Strikers for his Viper to help it out...
Thanks to all for helpin' Jim out.. He'll figure it out...
Ron
Someone turned off the factory speed limiter.
msdnga
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That happened here before, and the SCT had to be returned to stock, a stock program loaded, then reloaded a new 93 program. Passenger bank was not firing the injectors.
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