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Search: Posts Made By: Vader
Showing results 1 to 50 of 496
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Forum: Tech / General Engine
04-30-2024, 07:37 AM
Replies: 5
Views: 284
Posted By Vader

Re: Pushrods went through rocker arms

To be fair, poor metallurgy can happen anywhere, It just seems to happen a lot more frequently as parts origins transition from Federal-Mogul to something more like Wal-Mart. It's fairly evident...
Forum: Tech / General Engine
04-29-2024, 08:16 AM
Replies: 1
Views: 93
Posted By Vader

Re: Car Randomly Wont Start

It there is compression, fuel, and ignition, about all that is left is the timing between all those events.
Forum: Tech / General Engine
04-28-2024, 04:08 PM
Replies: 5
Views: 284
Posted By Vader

Re: Pushrods went through rocker arms

First, it appears that there actually IS some oil on those rockers, so that may not be the issue.

Second, what kind of springs are under those retainers?

Third, I can only wonder what manner of...
Forum: TPI
04-26-2024, 09:50 AM
Replies: 2
Views: 102
Posted By Vader

Re: Fuel System Troubleshooting

Can you report the actual fuel pressure measurements? Stating that it is "good" can be very conditional.
Forum: Tech / General Engine
04-18-2024, 08:02 AM
Replies: 20
Views: 751
Posted By Vader

Re: Low Voltage to Distributor

Good work in tracking it down.

There is nothing more frustrating than aftermarket and/or customized systems that aren't documented. The word "hack" comes to mind. I've done full-on EFI...
Forum: Tech / General Engine
04-14-2024, 11:16 AM
Replies: 6
Views: 236
Posted By Vader

Re: Rough idle

If there is no external leak, the pump check valve may be leaking back. Fortunately, that's not a serious problem. The system has a two-second prime cycle for a reason. I had an S10 that did that...
Forum: Tech / General Engine
04-14-2024, 08:05 AM
Replies: 6
Views: 236
Posted By Vader

Re: Rough idle

No. The EGR system has no effect on the fuel pump, regulator, injectors, etc.

After al that, it sounds as if you were able to operate the pump, so what is the fuel pressure with the pump running?
Forum: Tech / General Engine
04-13-2024, 09:00 AM
Replies: 102
Views: 2,908
Posted By Vader

Re: Whats respectable street performance in 2024?

It seems that "respectable performance" in 2024 could be a range of 200 miles per charge. It's a moving target.
Forum: Tech / General Engine
04-11-2024, 09:54 PM
Replies: 7
Views: 274
Posted By Vader

Re: Smaller Wiper motor

Classic.

That's probably for those who are inclined to do a lot of Burt Reynolds style high-speed backing up on the freeway. In the rain.
Forum: Tech / General Engine
04-09-2024, 03:30 AM
Replies: 1
Views: 105
Posted By Vader

Re: Battery Relocation Wiring

One option, and there are several, would be to route a larger wire (like about AWG8) from the auxiliary power (orange wire), then install an add-on fuse panel, like a Buss 15600-04, and feed the...
Forum: Tech / General Engine
04-04-2024, 11:16 AM
Replies: 13
Views: 970
Posted By Vader

Re: Rotor pointing at no. 1 with the piston about 1/4" from TDC?

If the cam sprocket has nylon teeth, it's time to replace it. Aside from that, bear in mind these facts:

Both the ignition and valve timing events are generally expressed in degrees of crankshaft...
Forum: TPI
04-03-2024, 08:53 AM
Replies: 13
Views: 498
Posted By Vader

Re: Need help on connector for 1987 iroc

I have a Trans Am, which is partially semi-half-backward from the IROC. Positively identify the wire colors and you'll have your best hint.
Forum: TPI
04-02-2024, 08:22 AM
Replies: 13
Views: 498
Posted By Vader

Re: Need help on connector for 1987 iroc

It might also be the A.I.R. divert valve solenoid connector.
Forum: TPI
04-01-2024, 06:28 PM
Replies: 13
Views: 498
Posted By Vader

Re: Need help on connector for 1987 iroc

The angle and shadows make it difficult to determine. Is one of those wire a black/pink stripe, or something else?
Forum: Tech / General Engine
03-30-2024, 11:52 AM
Replies: 13
Views: 970
Posted By Vader

Re: Rotor pointing at no. 1 with the piston about 1/4" from TDC?

Chain stretch/cam timing is one potential issue, but when the timing mark on the balancer and timing cover tab indicate "TDC" and the piston is obviously not at TDC, the problem is not the chain, but...
Forum: Tech / General Engine
03-29-2024, 09:26 AM
Replies: 7
Views: 285
Posted By Vader

Re: Intake corrosion - how much is too much?

It COULD seal if a lot of cleaning is done. It's difficult to determine from the photo, but the depth of the corrosion might even require machining. I've had the same condition on some 60° V-6...
Forum: TPI
03-28-2024, 06:26 PM
Replies: 37
Views: 260
Posted By Vader

Re: No Spark to the coil

If you short the two meter leads while in an "ohms" scale, does the meter indicate zero?
Forum: TPI
03-27-2024, 08:06 AM
Replies: 6
Views: 224
Posted By Vader

Re: SPEED LIMITER

The transmission is not fully electronically controlled like many later designs. The only thing that is controlled in that manner is the TCC lockup/unlock. The rest is a function of balance between...
Forum: TPI
03-26-2024, 11:57 AM
Replies: 6
Views: 224
Posted By Vader

Re: SPEED LIMITER

I just checked a 1987 L98 binary w $32 mask from a 1987 GTA for verification. Rev limit is set to 10036.73, Speed limit is set to 255.00. I recall that some "regular" F-Bodies had MPH limits set at...
Forum: TPI
03-26-2024, 11:42 AM
Replies: 6
Views: 224
Posted By Vader

Re: SPEED LIMITER

Yes. However, it is a likely impractical limit. There is a value in the factory programming for fuel cutoff at a given VSS input converted to MPH, just as there is a fuel cutoff for engine RPM. The...
Forum: Tech / General Engine
03-26-2024, 09:38 AM
Replies: 21
Views: 16,932
Posted By Vader

Re: 2.5L 4 cylinder Firebird!?!?

The only visual reference easily located is in this:

https://www.youtube.com/watch?v=7cVlbpOy0Yk
Forum: Tech / General Engine
03-25-2024, 05:59 PM
Replies: 5
Views: 190
Posted By Vader

Re: LG4- Chasing Misfire and Rev Hang

Good call. However, from the binary files I've looked through, the park/neutral is usually defined as an adder to the base/target idle. Nonetheless, it could result in the overall idle or IAC steps...
Forum: Tech / General Engine
03-24-2024, 09:17 AM
Replies: 7
Views: 347
Posted By Vader

Re: Aftermarket Engine Blocks?

This seems to be going down the path of a 97 cubic inch 3-cylinder with multiple fans making 500HP. It's entertaining and educational to watch, as it shreds itself to scrap within a time period...
Forum: Tech / General Engine
03-21-2024, 10:09 AM
Replies: 5
Views: 190
Posted By Vader

Re: LG4- Chasing Misfire and Rev Hang

Does the carb have a high idle solenoid? If so, is that adjusted properly? It can be unplugged or removed for diagnosis of the issue.

Another thought is that the something is allowing extra air,...
Forum: Tech / General Engine
03-18-2024, 10:04 AM
Replies: 4
Views: 173
Posted By Vader

Re: Sad in Santa fe

This site is focused upon Third-Generation GM F-Body vehicles and their support. Despite the fact that Daimler-Chrysler was buying everything from QuadraJets and Saginaw steering gears/pumps to TH...
Forum: Tech / General Engine
03-11-2024, 05:46 PM
Replies: 5
Views: 183
Posted By Vader

Re: Firebird dies when idling

If it holds pressure for a few seconds, it's might be O.K.

If you block the fuel return line and cycle the pump, does the pressure maintain longer? If not, it could be the check valve in the...
Forum: Tech / General Engine
03-10-2024, 06:21 PM
Replies: 6
Views: 3,199
Posted By Vader

Re: Power windows wont go down

Check the wiring in the door jamb, from the A pillar to the door shell. Unfortunately, the interior of the door will probably have to be removed to access the wiring you need at the motor connector.
Forum: Tech / General Engine
03-09-2024, 04:21 PM
Replies: 5
Views: 183
Posted By Vader

Re: Firebird dies when idling

At the very least, it's a fire hazard. It may also be affecting operating fuel pressure.
Forum: Tech / General Engine
03-09-2024, 03:07 PM
Replies: 5
Views: 183
Posted By Vader

Re: Firebird dies when idling

A fuel pressure test would be a good idea.
Forum: Tech / General Engine
03-06-2024, 09:32 AM
Replies: 3
Views: 187
Posted By Vader

Re: 87’ V6 Surging Idle/Misfire

Do you have a fuel pressure measurement to share?
Forum: Tech / General Engine
03-04-2024, 05:30 PM
Replies: 6
Views: 477
Posted By Vader

Re: Want a good laugh?

It sounds like you are rectifying the head issue, but that always leads to the nagging question about just what the rest of it might look like.

Maybe you'll get lucky when you pull the heads and...
Forum: TPI
03-03-2024, 09:17 AM
Replies: 13
Views: 396
Posted By Vader

Re: What's the scoop on the various AFPR's?

I was thinking that 5 years was a relatively short life, and thought I had better experience, maybe more like 20 years or better. However, my memory has limitations, so I use other means to...
Forum: Tech / General Engine
02-27-2024, 08:20 PM
Replies: 10
Views: 519
Posted By Vader

Re: Is there a way to clean the gas tank?

I got into a batch of old tractors about two years ago. In the 30+ pieces of equipment, about 4 had run within the previous 5 years. Most of the rest I know hadn't been run since 2002 or earlier,...
Forum: TPI
02-26-2024, 05:43 PM
Replies: 1
Views: 153
Posted By Vader

Re: Speed density harness; Camaro or Firebird

It should be the same aside from the location of the battery, and thus, the inline ECM/fuel pump fuse. The body harness would be different yet, with the battery difference and the presence of...
Forum: TPI
02-26-2024, 05:36 PM
Replies: 9
Views: 350
Posted By Vader

Re: engine starts and cuts out

What year? I ask because the later models might have the VATS system, which could complicate the matter somewhat.
Forum: Tech / General Engine
02-19-2024, 05:57 PM
Replies: 12
Views: 470
Posted By Vader

Re: Spark Plug Wire Set for use with Dyno Don's Headers

And if using OEM wires tucked under the headers, the OEM heat shields are also a nice addition, if you can get them. 12163646 ...
Forum: Fabrication
02-19-2024, 08:41 AM
Replies: 42
Views: 1,722
Posted By Vader

Re: AWD 3rd gen build

Great detail on the transfer case options. This is going to be entertaining.
Forum: TPI
02-18-2024, 03:02 PM
Replies: 2
Views: 180
Posted By Vader

Re: aftermarket harness

A chassis/body harness? Those are not as common as the engine harness.
Forum: TPI
02-16-2024, 06:46 PM
Replies: 6
Views: 307
Posted By Vader

Re: I need help troubleshooting.

The point of that is that the distributor could be 180° (360° crank rotation) out of phase, or could be just a tooth or two off, resulting in 30-70° out of the intended position.
Forum: TPI
02-16-2024, 06:29 PM
Replies: 6
Views: 307
Posted By Vader

Re: I need help troubleshooting.

Wow. That photo has really made the rounds in the last 20+ years. I guess it's worth more than a thousand words, as they say.

You might as well show the "before" photo of the twin bicycle chain...
Forum: TPI
02-14-2024, 06:22 PM
Replies: 16
Views: 520
Posted By Vader

Re: New car new to the forum

If it hasn't run in that period, pull some spark plugs to check condition, and don't hesitate in applying some oil through the plug holes. 2-cycle oil is pretty good for this purpose. Obviously,...
Forum: Tech / General Engine
02-13-2024, 06:58 PM
Replies: 20
Views: 751
Posted By Vader

Re: Low Voltage to Distributor

The same voltage on both the male and female sides of the connector?
Forum: Tech / General Engine
02-10-2024, 04:13 PM
Replies: 7
Views: 201
Posted By Vader

Re: MAF sensor code

This is what the analog MAF output voltage is for an '86 305:

http://www.wwdsltd.com/files/305MAF.jpg

If the idle RPM is changed, the intake air mass will change, so that piece of information...
Forum: Tech / General Engine
02-10-2024, 03:31 PM
Replies: 9
Views: 391
Posted By Vader

Re: Tpi runners

If any of you ever worked in either a fire-tube or water-tube boiler, you probably realize that the tubes are roll-formed into the head plates, and are not welded, brazed, or otherwise connected. ...
Forum: Tech / General Engine
02-09-2024, 10:25 AM
Replies: 3
Views: 231
Posted By Vader

Re: Car died now won't even start, strange issue.

Cables this old are suspicious, at best. The crimped connections at the starter and engine (main) ground can become resistive.
Forum: Tech / General Engine
02-09-2024, 10:23 AM
Replies: 9
Views: 387
Posted By Vader

Re: Bringing 86 Iroc Z out of storage.

If you have the J65 brake option, check the park brake actuator screws for freedom of movement. Don't be afraid to add a little antiseize compound to the lubricant for those screws. I do not regret...
Forum: Tech / General Engine
02-09-2024, 10:18 AM
Replies: 20
Views: 751
Posted By Vader

Re: Low Voltage to Distributor

I'll try to begin with the power distribution and related sections.

...
Forum: Tech / General Engine
02-09-2024, 09:11 AM
Replies: 3
Views: 233
Posted By Vader

Re: Wiper blades..longer than stock?

If there is adequate clearance (no rubbing on anything but glass) everywhere while parked and operating, and spring pressure of the arm is sufficient to hold down a longer blade without chatter at...
Forum: Tech / General Engine
02-08-2024, 11:32 PM
Replies: 20
Views: 751
Posted By Vader

Re: Low Voltage to Distributor

I have accumulated diagrams over the years, and cannot recall where most of them were hosted. Is this an original carbed '86? If so, I can probably load up the diagrams a few at a time.
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