Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mods

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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby bradzuzu » Fri Jun 09, 2017 12:35 am

That's nutts !! Atleast you figured out what was going on.. I wonder if the previous owner burned them up ?
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby paulevans76 » Fri Jun 09, 2017 8:37 am

Nope, the unit was "brand new" as in still in plastic in the original box, never used. Probably sat for 15 years though. I saw a youtube DIY video of a guy unstickin' one with about 6 hrs of ultrasonic baths with degreasers, baths with penetrating oil, and pulsing the injector. So I have hope that a professional shop that specializes in it can do it. Should only run me 50-75 bux. Hopefully that's the end of the nickel-diming of this whole 3.4 swap.

Anywho, going to send them off or drop them at a semi local place while I go out of town this next week and then it's gonna be awn.
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby bradzuzu » Sat Jun 10, 2017 2:28 am

Hopefully it'll be an easy fix then ... Have you checked into replacement injectors ?
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby paulevans76 » Sun Jun 11, 2017 9:52 pm

bradzuzu wrote:Hopefully it'll be an easy fix then ... Have you checked into replacement injectors ?


Yeah, unfortunately they stopped making this style years ago. The newer injectors are over a hundo each and the injector pod conversion for the new style is over a hundo as well. I could swap to the gm injectors but I think I would lose the easily adjustable FPR.
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby paulevans76 » Mon Jun 12, 2017 6:56 pm

Dropped the injectors off about an hr away at Race City Injector and hopefully have some good news from them later this week. When I get back in town this weekend they ought to be waiting for me.
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby bradzuzu » Mon Jun 12, 2017 11:35 pm

Good deal , hopefully they will be just fine and ready for you !!
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby paulevans76 » Wed Jun 14, 2017 4:47 pm

Got the word that they'll be waiting for me at the house when I get in. They broke free after a few minutes each. Can't wait!
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby bradzuzu » Thu Jun 15, 2017 12:09 am

Sweet so that's all that was wrong , that's great news !! Ian finally got his trooper up and running ...
91 amigo sas toy front leaf- traded off :(
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custom built buggy ffor the dirty stuff

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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby paulevans76 » Mon Jun 19, 2017 12:41 pm

OK, to catch up:

Injectors were waiting on me when I got home from the vacation. Battery was too low to get it started, but cranking it revealed that my injector pod hold-down bracket was loose, because it leaked fuel everywhere. Buttoned that up and couldn't get it to turn over. Got a jump from another vehicle and it cranked right up.

Idled good, but I must have missed my valve cover to air cleaner hose thingy had popped loose from the valve cover and I think that ended up oozing oil from there because there was a big stain beneath the rig after about 5 minutes. At least I'm hoping that's what caused it :drunken: Also running very rich so I cut it off and found the right allen key for the fuel pressure regulator, so I'll fiddle with that a bit next. Charged the battery last night so today I should be able to dial things in a little better. I guess I should pony up for a WINALDL cable.
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby bradzuzu » Mon Jun 19, 2017 7:25 pm

Pure awesomeness !! Hope everything adjusts in and it runs like a bat out of hell :)
91 amigo sas toy front leaf- traded off :(
2000 amigo sas d44 wagonear 4 link
custom built buggy ffor the dirty stuff

My build up page
Four link pics
Intake R&R - port and polish

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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby paulevans76 » Tue Jun 20, 2017 9:30 am

Thanks Brad!

And Whoa! How about this one: It wouldn't start back up with the fresh battery. It was laboring hard to turn over. Seemed like maybe the timing slipped too far advanced. My brother asked if maybe there was gas in the oil pan...


...oil pan had probably a gallon of fuel in it. :oops: Drained and put some in some fresh oil and a new filter. It's at least sparkly clean in there for sure. Glad I didn't blow it up!

The struggle continues later this evening :blackeye:
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby lorenzo816 » Tue Jun 20, 2017 10:52 am

dumb question, but how do you get gas in the oil pan?
Too much trying to fire it up unsuccessfully over the past few weeks?
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby paulevans76 » Tue Jun 20, 2017 11:42 am

Man, I don't really know. I changed the oil last on May 24 after I adjusted the timing. I probably drove it a bit with the old TBI on it, and some may have leaked past the rings, but I didn't drive it more than a spin maybe. I put the Holley on May 26 or 27. I'm sure there were a few "fuel down the TB" incidents during the removal of the injectors and checking fuel lines that might not have burned off when I got it to run. I did leave the gas cap off when I went on vacation for a week to prevent holding all the pressure into the TB, but maybe by then there was some in there. But I don't really know. Maybe a lot of it happened when I had the thing running for 10-15 minutes when I first put the injectors back in the other day. I need to find a fuel pressure gauge I reckon.

In the meantime, invest in oil stocks, because the way I'm having to change it out of this hog every few weeks, I'm sure some executive is going to get a new yacht.
91 SAS Trooper - Neverending tinkering
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Waggy D44 Front - 5.38's + RCV's + OX
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby btw1549 » Wed Jun 21, 2017 11:51 am

Sounds to me like an injector was stuck open. If there is that much in the pan I would check your plugs as well. You may have fouled them out in the short period of time running it.
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby paulevans76 » Wed Jun 21, 2017 12:27 pm

Yeah, they were fouled all right. Jeez Louise this thing is going to nickel-dime me to death. I'm just going to pop in my old plugs and see how it goes. If the injectors are still sticking I'll send them back to Race city and tell them to leave them in the bath pulsing for a few hours. This thing has been fighting me every step of the way, but I'm not giving up.
91 SAS Trooper - Neverending tinkering
Semi-hopped-up 3.4 + MUA5 + 3.07:1 low
Waggy D44 Front - 5.38's + RCV's + OX
Rodeo D44 Rear - 5.38's + Detroit
35" General Grabber X3's on Interco Birddogs
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby paulevans76 » Wed Jun 21, 2017 9:21 pm

Cleaned up the plugs real good and tried to get it going, but it looks like the injectors aren't pulsing again. Gonna get them back to race city injector and see what they can do.
91 SAS Trooper - Neverending tinkering
Semi-hopped-up 3.4 + MUA5 + 3.07:1 low
Waggy D44 Front - 5.38's + RCV's + OX
Rodeo D44 Rear - 5.38's + Detroit
35" General Grabber X3's on Interco Birddogs
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby bradzuzu » Thu Jun 22, 2017 10:44 am

I'm wondering if you've got an ecu issue or something , first no spark but injection , then spark and no fuel ...

No manual fuel pump to leak fuel into the engine , that would be a ton of fuel getting past the rings ..
91 amigo sas toy front leaf- traded off :(
2000 amigo sas d44 wagonear 4 link
custom built buggy ffor the dirty stuff

My build up page
Four link pics
Intake R&R - port and polish

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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby paulevans76 » Thu Jun 22, 2017 11:07 am

ECU was fine before, with the 2.8 and then with the 4.3 TB on the engine. So I'm not sure what could have caused that to happen. The GM 4.3 injectors pulsed fine when we tested them prior to the recent holley injector cleaning. Everything works but these damn injectors.

I think that perhaps an injector was stuck open when it was running the other day, washing out the cylinders and getting all the fuel in the oil, and now the injectors are stuck shut. I'm going to try one more time with these injectors and if they don't work I'm going to flip out for a short time and then find another solution.
91 SAS Trooper - Neverending tinkering
Semi-hopped-up 3.4 + MUA5 + 3.07:1 low
Waggy D44 Front - 5.38's + RCV's + OX
Rodeo D44 Rear - 5.38's + Detroit
35" General Grabber X3's on Interco Birddogs
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby bradzuzu » Thu Jun 22, 2017 1:44 pm

I'm sorry Paul this would really put me in a bad mood .. If I could afford it I'd fly out to you and see if we couldn't nip this pita in the butt once and for all .. You think the gas in the oil was a recent thing though or was this a build up from the previous crank no start issues ?

A stuck injector would've drowned the motor out right away , although chevys will dump massive amounts of fuel if the ecu temp gauge is bad , it makes the ecu think the engine is cold or worse if the sender is shorted out ...
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custom built buggy ffor the dirty stuff

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Four link pics
Intake R&R - port and polish

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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby paulevans76 » Fri Jun 23, 2017 6:36 am

I appreciate that, but I just need to narrow it down a little more and I'll know what the deal is. After I get the injectors cleaned again, if I still have trouble, I'll put the gm TB back on and see if the problem is replicated. If so, at that point, I'll find another computer to try.

I have another ECU in my parts hoard but the sticker is long gone and I have no idea if it is a 2.8 manual, 2.8 auto, or 3.1 manual computer. When I bought the engine it came with everything for a manual swap into an auto rig (package deal) but it seemed like it had harnesses for both and all the parts the dude wanted out of his way. The mystery computer :D
91 SAS Trooper - Neverending tinkering
Semi-hopped-up 3.4 + MUA5 + 3.07:1 low
Waggy D44 Front - 5.38's + RCV's + OX
Rodeo D44 Rear - 5.38's + Detroit
35" General Grabber X3's on Interco Birddogs
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby paulevans76 » Sun Jun 25, 2017 11:39 am

Got the injectors back yesterday. The owner of Race City Injector, Chad, is a good dude and ran them through 3-4 cycles and met me on a Saturday to get them to me.

When I got home, I popped them in and cranked and ran the trooper in the driveway. Wouldn't idle until it warmed up. Shut it off for a bit and then cranked it back up and took it on a very short down to the end of the road and back jaunt. Then later on last night I drove it a few miles to the grocery store and back.

Today I'm going to try and tune the idle and set the TPS, hopefully get it idling in open loop/cold, and then hopefully see if driving it over the next few days can get the blow-by or whatever it is toned down....we were gonna re-name the trooper "Flash", but for the next few weeks I think it should be "Smokey" :D Hopefully it's not permanent!
91 SAS Trooper - Neverending tinkering
Semi-hopped-up 3.4 + MUA5 + 3.07:1 low
Waggy D44 Front - 5.38's + RCV's + OX
Rodeo D44 Rear - 5.38's + Detroit
35" General Grabber X3's on Interco Birddogs
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby paulevans76 » Sun Jun 25, 2017 5:15 pm

Tuned on it a bit, drove it a little, but fuel is still getting into the oil and there's a lot of smoke from the breather tube off the valve cover (and out the back). I'm sure the cat is nearly clogged at this point. I need to go ahead and order the WinALDL cable so's I can look and see how to tweak the fuel pressure. New cat will come with the new exhaust system, should this engine ever decide to run right.
91 SAS Trooper - Neverending tinkering
Semi-hopped-up 3.4 + MUA5 + 3.07:1 low
Waggy D44 Front - 5.38's + RCV's + OX
Rodeo D44 Rear - 5.38's + Detroit
35" General Grabber X3's on Interco Birddogs
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Re: Coil/Radius arm SAS 1st gen Trooper - fine tuning/new mo

Postby paulevans76 » Mon Jun 26, 2017 8:54 am

Think I might also have a leaking valve cover, so I'll check into that. I keep finding oil puddles after running this thing and it's getting on the driver side of the intake as well as down the drivers side of the block and over the starter n stuff. Gonna order a new set since I probably reused this rubber set 3 times already.

Pretty sure I'm going to find a good amount of fuel in the oil again. I'm going to wait until my ALDL-USB cable shows up to run/drive it anymore.
91 SAS Trooper - Neverending tinkering
Semi-hopped-up 3.4 + MUA5 + 3.07:1 low
Waggy D44 Front - 5.38's + RCV's + OX
Rodeo D44 Rear - 5.38's + Detroit
35" General Grabber X3's on Interco Birddogs
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