Third Generation F-Body Message Boards - Search Results

 
Search: Posts Made By: Schurkey
Showing results 1 to 50 of 499
Search took 0.34 seconds.
Forum: TBI
03-24-2019, 06:16 PM
Replies: 3
Views: 141
Posted By Schurkey

Re: 350 TBI won't start when timing bypass is disconnected / unplugged

I'd have guessed "ignition module" rather than "pickup coil".

If you had spark and fuel spray, the pickup coil is working. I think some--but not all--of the internal module circuitry is...
Forum: TBI
03-20-2019, 09:37 PM
Replies: 34
Views: 817
Posted By Schurkey

Re: 355 9c1

1. I would not have used that assembly lube on the rings/pistons. I certainly would not have used THAT MUCH, as shown in the photos.
2. Torque to turn the crank seems high, especially considering...
Forum: TBI
03-20-2019, 09:07 PM
Replies: 17
Views: 338
Posted By Schurkey

Re: 383 TBI cam selection

You read it here, first.

I was wrong. Fast355 is correct

It is just as he said, it's a double-drilling, from the front face of the block NOT all the way through to the water jacket, and then...
Forum: TBI
03-17-2019, 12:06 PM
Replies: 17
Views: 338
Posted By Schurkey

Re: 383 TBI cam selection

I put a "service replacement" crate engine in my '88 K1500 nearly twenty years ago. The replacement engine was built on an "880" block, and of course it had the timing cover holes and the coolant...
Forum: TBI
03-15-2019, 06:06 PM
Replies: 17
Views: 338
Posted By Schurkey

Re: 383 TBI cam selection

If you're using the TBI water pump and accessory drive, you'll need to drill some holes in the block for timing cover bolts and a coolant bypass.

If you're using the Vortec water pump and...
Forum: TBI
03-15-2019, 04:36 AM
Replies: 28
Views: 6,265
Posted By Schurkey

Re: 2.02 heads on a 305

Quench isn't measured to the ROOF of the combustion chamber. It's measured to the machined, flat part of the chamber. Milling the head makes for a smaller chamber, higher compression--but the flat...
Forum: TBI
03-14-2019, 05:23 PM
Replies: 28
Views: 6,265
Posted By Schurkey

Re: 2.02 heads on a 305

Look at that article again. First Guess: NOT 23^ heads. They were Twisted Wedge heads, first generation, with the intake repositioned at 13 degrees not 23. They also warned about valve-to-bore...
Forum: TBI
03-14-2019, 05:01 PM
Replies: 3
Views: 127
Posted By Schurkey

Re: Rough Idle while cold

Stop changing parts at random, connect a scan tool and look at the data stream. Might be worthwhile to read the codes while you're in there--but the data stream is more important.

How long has it...
Forum: TBI
03-14-2019, 04:53 PM
Replies: 7
Views: 176
Posted By Schurkey

Re: TBI question

No.

So this is an electrical problem.


Voltage is probably supplied by the fuse and wire harness any time the key is "on". The ECM supplies pulsed ground to fire the injector(s). I bet your...
Forum: TBI
03-11-2019, 11:46 AM
Replies: 9
Views: 206
Posted By Schurkey

Re: No fuel!

What is the voltage on the fuel pump + wire near the fuel tank when the engine is cranking? Should be within a couple of volts of battery voltage
What is the voltage on the fuel pump - wire near the...
Forum: TBI
03-11-2019, 11:39 AM
Replies: 2
Views: 205
Posted By Schurkey

Re: Dual TBI problems

Faulty (leaking) injector
Faulty (grounded) wire harness
Faulty ECM

The injectors must not spray fuel until the ECM gets an "engine turning" signal from the pickup coil via the ignition module.
Forum: TBI
03-10-2019, 06:21 PM
Replies: 9
Views: 206
Posted By Schurkey

Re: No fuel!

1. Does the fuel pump run for two seconds when the key is turned from "off" to "run"? If the fuel pump primes, it's not the fuel pump relay. If the pump runs when the engine is being cranked (has...
Forum: TBI
03-05-2019, 12:10 AM
Replies: 13
Views: 16,645
Posted By Schurkey

Re: Timing Chain Changed, Car Won't Start

Yes, but typically, not rapidly. If it was that loose, it'd move farther than a few degrees, and it'd likely make noise. You'd risk damage to the timing cover, too.

When the damper rubber fails,...
Forum: TBI
03-04-2019, 01:15 AM
Replies: 4
Views: 127
Posted By Schurkey

Re: timing trouble

You've tested it on other vehicles? Is this a "dial-back" timing light?


"Brand new" usually means "Cheap Chinese". And "cheap Chinese distributor" usually means "Faulty ignition module" if not...
Forum: TBI
03-03-2019, 10:15 PM
Replies: 4
Views: 127
Posted By Schurkey

Re: timing trouble

WHAT VEHICLE IS THIS??? WHAT ENGINE???


Test the engine for timing chain slop and find out.


Pull the distributor, look at the wear on the distributor gear and on the cam gear. Is the pickup...
Forum: TBI
02-25-2019, 12:15 PM
Replies: 40
Views: 7,865
Posted By Schurkey

Re: car dies when put in gear

It's not possible to have the ECM connected if there's no injectors to control, and no TPS sending info down the wire harness.

Do you still have the small-diameter computer-controlled HEI...
Forum: TBI
02-24-2019, 05:26 PM
Replies: 40
Views: 7,865
Posted By Schurkey

Re: car dies when put in gear

This is the Throttle Body Injection forum.
Forum: TBI
02-17-2019, 11:13 PM
Replies: 9
Views: 255
Posted By Schurkey

Re: Engine sounds deeper than normal & not staying on after TBI Rebuild

Good luck returning a TPS that's been open and installed. Won't happen around here.
Forum: TBI
02-17-2019, 07:30 PM
Replies: 9
Views: 255
Posted By Schurkey

Re: Engine sounds deeper than normal & not staying on after TBI Rebuild

"Self-Inflicted" automotive problems are the worst. Glad you've figured that part out already.



Is there something wrong with the TPS that's on the car now?

Throttle cable binding? Cruise...
Forum: TBI
02-17-2019, 07:23 PM
Replies: 9
Views: 255
Posted By Schurkey

Re: Engine sounds deeper than normal & not staying on after TBI Rebuild

An ancient post I made on another forum. This shows the capabilities of a decent (but very old) scan tool on a 1988 TBI K1500 pickup.
...
Forum: TBI
02-17-2019, 06:31 PM
Replies: 9
Views: 255
Posted By Schurkey

Re: Engine sounds deeper than normal & not staying on after TBI Rebuild

A REAL scan tool--not consumer-grade junk--can connect to certain GM vehicles as old as 1980 1/2. 1981 was the first model-year of widespread on-board computer usage, and scan tools will connect to...
Forum: TBI
02-17-2019, 06:07 PM
Forum: TBI
02-13-2019, 12:20 PM
Replies: 34
Views: 817
Posted By Schurkey

Re: 355 9c1

Excellent.


DO NOT dip them in oil! There's no reason to have that much lube in the cylinders.

My procedure is to have the cylinders final-honed with a dingleberry brush--240 grit is common...
Forum: TBI
02-07-2019, 05:12 PM
Replies: 6
Views: 259
Posted By Schurkey

Re: No fuel!

1. No voltage/current to fuel pump
2. Defective ground.
3. Defective pump
4. Plugged filter or filter sock
5. Out of gas

If you normally hear the pump priming, and you don't now...most likely...
Forum: TBI
02-04-2019, 08:46 PM
Replies: 6
Views: 259
Posted By Schurkey

Re: No fuel!

No fuel pressure TO the injectors, or proper fuel pressure, but no fuel spraying OUT of the injectors? BIG difference.

Connect a fuel pressure gauge, tell us if the pump primes when key is turned...
Forum: TBI
01-28-2019, 05:41 PM
Replies: 28
Views: 814
Posted By Schurkey

Re: Rear axle ratio recommendations for L05/T5 build

T5??? Better install it with wing-nuts so you don't need tools to take it back out when it shatters.

The deepest gears you can buy gasoline for would lessen the load on the trans: 3.73, 3.90,...
Forum: TBI
01-09-2019, 08:17 PM
Replies: 26
Views: 642
Posted By Schurkey

Re: Edelbrock 3704 vs Holley 300-66

I don't know what "starving" means, so I can't help other than to offer guesses: Not enough fuel, not enough exhaust system. Possibly weak ignition. Worn cam lobes, not enough valve lift.

What...
Forum: TBI
01-09-2019, 12:26 PM
Replies: 26
Views: 642
Posted By Schurkey

Re: Edelbrock 3704 vs Holley 300-66

I have a Holley TBI, but I've never installed it. I wasn't expecting the throttle bracket to require different cable ends. I figured the stock cables would plug right into the Holley arm.

...
Forum: TBI
01-08-2019, 11:24 PM
Replies: 34
Views: 817
Posted By Schurkey

Re: 355 9c1

Your answer is based on the accessory brackets at the front of the engine. I was talking about the TV cable and Cruise Cable (and throttle cable) brackets at the rear.

Yeah, the accessory brackets...
Forum: TBI
01-08-2019, 06:28 PM
Replies: 34
Views: 817
Posted By Schurkey

Re: 355 9c1

Vortec heads will require mods to the brackets, as the brackets are intended to be bolted to the stud-tops of the intake manifold bolts which are laid-over on the OEM and Summit heads, but...
Forum: TBI
01-08-2019, 11:10 AM
Replies: 1
Views: 204
Posted By Schurkey

Re: oil dipstick tube installation problem! help!

Did you get the broken stub OUT of the engine block? I've seen a couple guys hammering dipstick tubes into the block without taking out the broken chunk. Didn't end well.

Check for a burr or...
Forum: TBI
01-08-2019, 11:05 AM
Replies: 17
Views: 440
Posted By Schurkey

Re: Help! Canít drive after TB rebuild

1. Brake cleaner is often WORTHLESS for finding vacuum leaks, as some formulations are not flammable. Other formulations will burn, but produce poisonous gas that can land you in the hospital with...
Forum: TBI
12-20-2018, 05:39 PM
Replies: 8
Views: 401
Posted By Schurkey

Re: TBI wont start HELP

What is the fuel pressure?
What is the cranking compression of all eight cylinders?
What is the data stream showing for coolant temperature, MAP, and RPM?
Forum: TBI
12-18-2018, 01:08 PM
Replies: 6
Views: 291
Posted By Schurkey

Re: Ignition coil or Icm?

This could be a dozen different things, it wouldn't have to be the ignition coil or the ignition module. Testing the ignition coil is easy. Testing the module is not. I'd also want to know what the...
Forum: TBI
12-18-2018, 12:58 PM
Replies: 26
Views: 642
Posted By Schurkey

Re: Edelbrock 3704 vs Holley 300-66

Ranges? Plural? MORE THAN ONE??? First Guess: NOT an airflow problem.
Forum: TBI
12-17-2018, 07:33 PM
Replies: 26
Views: 642
Posted By Schurkey

Re: Edelbrock 3704 vs Holley 300-66

The Holley appears to have the wrong style EGR mounting pad for a TBI EGR valve. The Holley may not have mounting pads for the AC compressor brace and the EGR solenoid and MAP sensor bracket. Hard to...
Forum: TBI
12-14-2018, 09:03 PM
Replies: 34
Views: 817
Posted By Schurkey

Re: 355 9c1

This surprises me. A lot. By "TBI heads", you're talking about Swirl-Ports, right? Or do you mean something else?

If you'd said "up to 2,500 rpm" I'd be less surprised. 2500 rpm should be enough...
Forum: TBI
12-13-2018, 12:09 PM
Replies: 7
Views: 377
Posted By Schurkey

Re: 383 Vortec TBI advice

Are you using "production" Vortec heads, or some aftermarket version? Porting? Larger valves? Different seat angles?

What intake manifold?
Forum: TBI
12-11-2018, 11:31 AM
Replies: 34
Views: 817
Posted By Schurkey

Re: 355 9c1

Vortec heads on a TBI application requires a SEVERELY expensive (~$500) intake manifold, PLUS a special high-temperature exhaust hose from the special exhaust manifold to the intake manifold to keep...
Forum: TBI
12-10-2018, 02:53 PM
Replies: 34
Views: 817
Posted By Schurkey

Re: 355 9c1

As far as the top end goes, you'll want to select a head gasket that is compatible with your cylinder heads. If you're using a TBI intake manifold, the intake gaskets are "special" because the rear...
Forum: TBI
12-10-2018, 02:48 PM
Replies: 34
Views: 817
Posted By Schurkey

Re: 355 9c1

You'll have excess squish/quench distance unless you deck the block some more. Those pistons are already .010 short, and even at full height you'd need to deck the block. When it was me, I had .025...
Forum: TBI
11-29-2018, 07:24 PM
Replies: 1
Views: 244
Posted By Schurkey

Re: stalls, or ildes way up and drops

Connect a scan tool and a fuel pressure gauge, see what the data stream and the pressure gauge tell you.

Far as I know, TBI runs on 9--13 psi except for some 454s.
Forum: TBI
11-26-2018, 02:12 AM
Replies: 3
Views: 417
Posted By Schurkey

Re: TBI with really sluggish acceleration

"Around 45mph" sounds like the torque converter clutch has a problem. That's typical engagement speed for a TCC.

Could be something else...but the speed is about right for the TCC.
Forum: TBI
11-25-2018, 11:08 PM
Replies: 7
Views: 276
Posted By Schurkey

Re: How To Stop Fuel From Leaking When Removing TBI For Rebuild

Or cram the (uncut) tapered applicator for silicone RTV into the end of the fuel hose.
Forum: TBI
11-25-2018, 11:05 PM
Replies: 3
Views: 417
Posted By Schurkey

Re: TBI with really sluggish acceleration

Any car that barely passes emissions testing for HC that has a catalytic converter has a defective catalyst.and/or tremendous misfire. If it has tremendous misfire...the catalyst is toast anyway.
...
Forum: TBI
11-24-2018, 04:55 PM
Replies: 5
Views: 380
Posted By Schurkey

Re: Cross Fire engine build.. Opinions on whats to come.

.025 in the hole, plus a typical .040 gasket = no quench.
Forum: TBI
11-23-2018, 09:20 PM
Replies: 21
Views: 373
Posted By Schurkey

Re: Help! 90 Camaro 305 possible tbi issues.

Yep. Your module tested good. Engine runs good. For awhile. Then it doesn't. You replace the module, and problem vanishes.

Module testers can't be trusted. False positives, false negatives.
...
Forum: TBI
11-23-2018, 12:54 PM
Replies: 9
Views: 433
Posted By Schurkey

Re: TBI smokin out

Two likely causes:
1. Electrical smoke from shorted wire or overheated electrical components

2. Excessive blow-by or a defective PCV system, blow-by is coming out the crankcase and into the air...
Forum: TBI
11-20-2018, 10:49 PM
Replies: 5
Views: 380
Posted By Schurkey

Re: Cross Fire engine build.. Opinions on whats to come.

"Flat Tops" means NOTHING until you start specifying compression distance. It's REALLY easy to get pistons that sit too low in the cylinder, and then require excess milling of the block decks to get...
Forum: TBI
11-19-2018, 03:00 PM
Replies: 3
Views: 320
Posted By Schurkey

Re: TBI FUEL PRESSURE

9--13.

Why start another thread when you've already got one going on this vehicle?
Showing results 1 to 50 of 499
 


 
Forum Jump

Advertising
Featured Sponsors
Vendor Directory

Contact Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.