Question about Chevrolet C3500

1 Answer

Replaced distributor on my 1988 chevy c3500 pick up. 5.7 liter engine w/ tbi. not sure how to set timing? is advance going to change the value? looking for timing setting and procedure to reach setting (disable timing advance some how?)

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Chevrolet Master
  • 8,195 Answers

Hi, I have pasted the procedure below. Your spec is 0 degrees (right at TDC).


CHECKING AND ADJUSTMENT

HEI Systems

  1. Start the engine and allow it to reach operating temperature. Stop the engine and connect the timing light to the No. 1 (left front) spark plug wire, at the plug or at the distributor cap. You can also use the No. 6 wire, if it is more convenient. Numbering is illustrated in this section.

Do not pierce the plug wire insulation with HEI; it will cause a miss. The best method is an inductive pickup timing light.
  1. Clean off the timing marks and mark the pulley or damper notch and timing scale with white chalk.
  2. Disconnect and plug the vacuum line at the distributor on models with a carburetor. This is done to prevent any distributor vacuum advance. On fuel injected models, disengage the timing connector which comes out of the harness conduit next to the distributor, this will put the system in the bypass mode. Check the underhood emission sticker for any other hoses or wires which may need to be disconnected.
  3. Start the engine and adjust the idle speed to that specified on the Underhood Emissions label. With automatic transmission, set the specified idle speed in Park. It will be too high, since it is normally (in most cases) adjusted in Drive. You can disconnect the idle solenoid, if any, to get the speed down. Otherwise, adjust the idle speed screw.

The tachometer connects to the TACH terminal on the distributor and to a ground on models with a carburetor. On models with fuel injection, the tachometer connects to the TACH terminal on the ignition coil. Some tachometers must connect to the TACH terminal and to the positive battery terminal. Some tachometers won't work with HEI.


WARNING Never ground the HEI TACH terminal; serious system damage will result.

  1. Aim the timing light at the pointer marks. Be careful not to touch the fan, because it may appear to be standing still. If the pulley or damper notch isn't aligned with the proper timing mark (see the Underhood Emissions label), the timing will have to be adjusted.

TDC or Top Dead Center corresponds to 0°B, or BTDC, or Before Top Dead Center may be shown as BEFORE. A, or ATDC, or After Top Dead Center may be shown as AFTER.
  1. Loosen the distributor base clamp locknut. You can buy trick wrenches which make this task a lot easier.
  2. Turn the distributor slowly to adjust the timing, holding it by the body and not the cap. Turn the distributor in the direction of rotor rotation to ******, and against the direction of rotation to advance.
  3. Tighten the locknut. Check the timing again, in case the distributor moved slightly as you tightened it.
  4. Reinstall the distributor vacuum line or the timing connector. Correct the idle speed.
  5. Stop the engine and disconnect the timing light.

Posted on Mar 25, 2011

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

1995 Chevy 350. I'm going make this as elaborate


Could also be a problem with the throttle position sensor

Oct 28, 2013 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

Can't seem to see where the oil pressure switch is on my 1988 chevy pick - up 1/2 ton 5.7 liter. Need a diagram or picture to see where it is exactly


Hello: The oil pressure sensor is at the rear top of the engine near/under the ignition distributor, has one electrical connector. You may have to remove the ignition distributor to get to it unless you have a special oil pressure socket.

Jan 06, 2011 | 1988 Chevrolet C1500

2 Answers

What size engine? i have a 1988 chevy celebrity, 4 cylinder 4 tech. how many liters does she gush?


Available engines for Celebrity:
- 4 Cylinders R 2.5L TBI OHV
- 6 Cylinders W 2.8L FI OHV

Other details for 1988 Chevrolet Celebrity 2.5L TBI OHV 4cyl can find in autozone.com (free register).

Hope thats help (remember rated this help) Good luck.

Feb 04, 2010 | 1988 Chevrolet Celebrity

1 Answer

93 chevy 1500 v6 keeps dying out.


Connect a voltmeter set on ac volts to the pickup coil wires (disconnected from the module) and crank the engine.

2. The pick-up coil output should be more than 0.7v AC. If not, replace the pick up coil and distributor shaft.

3. Visually inspect the condition of the magnet on top of the distributor shaft to be in good condition. If not, replace the distributor

1. Disconnect the set timing connector or ground the Tan/Black bypass wire.

2. The check engine light should come on and code 42 should set.

3. If the engine stops stalling, disconnect the pick up coil connector at the Ignition Control Module (ICM).

4. Check acv output from the pick up coil while cranking the engine at a normal cranking speed.

5. If output is less than 700 mv replace the distributor shaft with a new one.

Oct 13, 2009 | Chevrolet 1500 Cars & Trucks

2 Answers

I have a 1998 chevy c3500 with the 7.4 liter


you can't change the timing in this engine nor can you adjust the valves. The timing is adjusted throught the computer therefore there is no mechanical way to change this. You might be able to with some kind of programmer or computer program.

Oct 06, 2009 | 1998 Chevrolet C3500

1 Answer

How to set ignition timing on 1994 chevy 7.4 liter


First you have to find the connector that is near the distributor that is close to the firewall. (It could be taped to the outside harness.) What this does is that it puts the computer into base timing mode. Unplug this connector. Once that's done, then you set the timing just like any other vehicle, with a timing light. After timing is set, reconnect the connector and the computer takes over.
Question: was there engine work done to it or is this a high miler and you just changed the timing chain and gears?

Sep 20, 2009 | 1994 Chevrolet C3500

1 Answer

I have a c3500 chevy silverado, 7.4 litre engine and the specifications for tuning is not under the hood. I do not know what timing marks should be. Please help. The distributor was removed and repleced to...


Is this tbi? I'll have to look it up but it should be set at zero degrees with the timing connector unplugged, I think. The timing connector is under the plastic relay cover on the passenger side firewall. It is a single wire plug that the wire is tan with a black tracer. With this unplugged you set the timing mark to the large gap on the timing tab.

Aug 23, 2009 | 1988 Chevrolet K1500

2 Answers

Need transmission info for 1988 Chevy Silverado 454 C3500 dually


got a clutch pedal in there? If auto, it could be a 700r4 or some variation of that. You can likely get exact info from a dealer if you give them the vin #.

May 22, 2009 | 1988 Chevrolet C3500

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

601 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

75822 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8195 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...