Set timing on 87 chevy truck 7.4 tbi

Question 1

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3answers

87 chevy s10 blazer cranks but wont start no spray injectors getting power to fuel pump fuel relay fuel injectors icm starts with starting fluid spraying in tbi

Need to connect a fuel pressure gauge and see if you are getting sufficient pressure to the tbi

Jan 26, 2017 • 1987 Chevrolet Blazer

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1answer

Does an 87 chevy suburban have a chip (not an ecm) for the tbi? And if so where is it located?

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Chip it! Finale- - YouTube

? 3:41
https://www.youtube.com/watch?v=CSFR7XldItE
May 23, 2010 - Uploaded by pearsonba350
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Nov 19, 2015 • Cars & Trucks

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I want to know what size trani came in a Chevy one ton with a stock 454

"Big Dooley" it was called back then....
the transmission, has a side plate that tells ALL.
look there, (will need serious cleaning from 1983 to now)
GM matches, tranny to engine power and torque max.
they have M/T and A/T tranny. 4speed Muncie, (my first love) m20
or
M40 Th400 3speed slush pump?
here is first google hit on spec;s like a answer on other post. same'
http://www.chuckschevytruckpages.com/73-87specs.html

note 2 , 454s one with TBI
The one-ton model designation was the C or K 30 for GMC and 3500 for Chevrolet.(wiki quote, sure read the wiki on you truck first)
http://en.wikipedia.org/wiki/Chevrolet_C/K#Third_generation_1973.E2.80.931987

there is no lack of information on this truck
use GOOGLE it really is your friend.
here is a search.

here is K30 (which is it C or K?) learn this first
C-Series Truck = 2 Wheel Drive (1960-2002)
K-Series Truck = 4 Wheel Drive (1960-2000)

k30.?
https://www.google.com/webhp?gws_rd=ssl#q=chevrolet+k30+specifications

there is how you can research your car, then ask more detailed questions, (peel the onion)????

Jul 05, 2014 • Cars & Trucks

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1answer

1987 Chevy R20 rough idle

If you have 68 lbs of fuel pressure you need to rebuild your TBI. Should never have 68lbs on TBI system

Nov 23, 2017 • 1987 Chevrolet R20

4helpful

2answers

87 Chevy truck with 350 tbi. Have fuel pressure but no spark

if it has a distributor then the button could be bad. if so then you would want to replace the cap and all. if that dont work you may want to check your plugs or wires. i have actually bought wires that didnt work. they looked perfect but the wire wasnt connected to the end. it just pulled out of the plug part that goes on the spark plug.

Apr 10, 2012 • 1987 Chevrolet R10

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1answer

INTERMITTING FUEL PUMP

bad harness connection
faulty pump relay
faulty pressure reulator
blocked filter
no signal from ECM to relay

Jan 27, 2018 • 1987 Chevrolet R10

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1answer

Have 1987 chevy pickup truck not getting fuel to the TBI unit. when you turn ignitionkey to "on" pump starts to pump fuel, and will start to run but shuts off after 2 to 3 second or so. Even...

Kent, That sounds like normal operation.....see this link (https://www.justanswer.com/chevy/0z9bu-fuel-pump-relay-located-1987-chevy-silverado.html) The ECM shuts the pump down if the engine doesn't begin running in two seconds. I would bleed out the fuel line up to the TBI...crack the line at the TBI then cycle the key a couple of times until you see gas coming out of the line at the TBI. That will ensure you have fuel at the TBI, then try to start the engine. See the link for additional info.

Feb 24, 2018 • Cars & Trucks

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1answer

How to fix high idle in park on 87 chevy truck with 305 tbi

on the side of the carburetor is whats called the butterfly, the cable from the gas pedal is connected to it. It is spring loaded . there is a screw that allows you to adjust idle by turning to position the butterfly to stop at the correct idle.

Oct 28, 2010 • 1987 Chevrolet G10

3helpful

1answer

87 chevy truck with TBI idles too fast

Spray the intake with carb cleaner to find the vacuum leak. Check where the EGR mounts and the throttle body gasket sense you had both off.

May 10, 2009 • 1987 Chevrolet R20

0helpful

1answer

Need a diagram 87 chevy

I know from Experience on Rebuilding my Chevelle www.PainlessWiring.com has everything that you need for this Conversion.

Jan 04, 2009 • 1988 Chevrolet K1500

Question 2

Barbara Allen

Expert 148 Answers
Posted on Nov 24, 2012

Barbara Allen

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After checking this out, i found that this truck has a throttle position sensor. Not sure if there is a timing mark at all. I believe it is set by the ECM (computer) via the TPS

Answer 2 · 3/25/2011 12:00:00 AM

Jeffrey Turcotte

8991 Answers
Posted on Mar 25, 2011

SOURCE: replaced distributor on my 1988

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

CHECKING AND ADJUSTMENT

HEI Systems

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.

Clean off the timing marks and mark the pulley or damper notch and timing scale with white chalk.
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.
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.

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.

Loosen the distributor base clamp locknut. You can buy trick wrenches which make this task a lot easier.
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.
Tighten the locknut. Check the timing again, in case the distributor moved slightly as you tightened it.
Reinstall the distributor vacuum line or the timing connector. Correct the idle speed.
Stop the engine and disconnect the timing light.

Dan C

93 Answers
Posted on May 21, 2009

SOURCE: Chevy 454 back fire

Ignition timing is set by the computer as long as the distributor pickup point is within reason.

It could be running too lean. One of the TBI injectors may be sticking or not working (wiring or computer problem), or fuel pressure could be low.

Anonymous

4669 Answers
Posted on May 10, 2009

SOURCE: 87 chevy truck with TBI idles too fast

Spray the intake with carb cleaner to find the vacuum leak. Check where the EGR mounts and the throttle body gasket sense you had both off.

Anonymous

1486 Answers
Posted on Jul 19, 2009

SOURCE: 1987 chevy S10 engine idle problem

relace the throtle air idle valve.The temp switch will allso cause this problem.

Anonymous

15 Answers
Posted on Mar 31, 2010

SOURCE: ignition control module 1987 chevy truck 305 tbi

the green should be the n

Answer 3 · 3/25/2011 12:00:00 AM

Jeffrey Turcotte

8991 Answers
Posted on Mar 25, 2011

SOURCE: replaced distributor on my 1988

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

CHECKING AND ADJUSTMENT

HEI Systems

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.

Clean off the timing marks and mark the pulley or damper notch and timing scale with white chalk.
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.
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.

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.

Loosen the distributor base clamp locknut. You can buy trick wrenches which make this task a lot easier.
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.
Tighten the locknut. Check the timing again, in case the distributor moved slightly as you tightened it.
Reinstall the distributor vacuum line or the timing connector. Correct the idle speed.
Stop the engine and disconnect the timing light.

Answer 4 · 5/21/2009 12:00:00 AM

Dan C

93 Answers
Posted on May 21, 2009

SOURCE: Chevy 454 back fire

Ignition timing is set by the computer as long as the distributor pickup point is within reason.

It could be running too lean. One of the TBI injectors may be sticking or not working (wiring or computer problem), or fuel pressure could be low.

Answer 5 · 5/10/2009 12:00:00 AM

Anonymous

4669 Answers
Posted on May 10, 2009

SOURCE: 87 chevy truck with TBI idles too fast

Spray the intake with carb cleaner to find the vacuum leak. Check where the EGR mounts and the throttle body gasket sense you had both off.

Answer 6 · 7/19/2009 12:00:00 AM

Anonymous

1486 Answers
Posted on Jul 19, 2009

SOURCE: 1987 chevy S10 engine idle problem

relace the throtle air idle valve.The temp switch will allso cause this problem.

Answer 7 · 3/31/2010 12:00:00 AM

Anonymous

15 Answers
Posted on Mar 31, 2010

SOURCE: ignition control module 1987 chevy truck 305 tbi

the green should be the n

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Set timing on 87 chevy truck 7.4 tbi

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Barbara Allen

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Jeffrey Turcotte

Dan C

Anonymous

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Related Questions:

87 chevy s10 blazer cranks but wont start no spray injectors getting power to fuel pump fuel relay fuel injectors icm starts with starting fluid spraying in tbi

Does an 87 chevy suburban have a chip (not an ecm) for the tbi? And if so where is it located?

Chevy Suburban replacement key ? Mile High Locksmith ™

Chip it! Finale- - YouTube

I want to know what size trani came in a Chevy one ton with a stock 454

1987 Chevy R20 rough idle

87 Chevy truck with 350 tbi. Have fuel pressure but no spark

INTERMITTING FUEL PUMP

Have 1987 chevy pickup truck not getting fuel to the TBI unit. when you turn ignitionkey to "on" pump starts to pump fuel, and will start to run but shuts off after 2 to 3 second or so. Even...

How to fix high idle in park on 87 chevy truck with 305 tbi

87 chevy truck with TBI idles too fast

Need a diagram 87 chevy

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87 chevy s10 blazer cranks but wont start no spray injectors getting power to fuel pump fuel relay fuel injectors icm starts with starting fluid spraying in tbi

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Set timing on 87 chevy truck 7.4 tbi

1 Answer

5 Related Answers

Add Your Answer

Attachments: Added items

Related Questions:

87 chevy s10 blazer cranks but wont start no spray injectors getting power to fuel pump fuel relay fuel injectors icm starts with starting fluid spraying in tbi

Does an 87 chevy suburban have a chip (not an ecm) for the tbi? And if so where is it located?

I want to know what size trani came in a Chevy one ton with a stock 454

1987 Chevy R20 rough idle

87 Chevy truck with 350 tbi. Have fuel pressure but no spark

INTERMITTING FUEL PUMP

Have 1987 chevy pickup truck not getting fuel to the TBI unit. when you turn ignitionkey to "on" pump starts to pump fuel, and will start to run but shuts off after 2 to 3 second or so. Even...

How to fix high idle in park on 87 chevy truck with 305 tbi

87 chevy truck with TBI idles too fast

Need a diagram 87 chevy

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87 chevy s10 blazer cranks but wont start no spray injectors getting power to fuel pump fuel relay fuel injectors icm starts with starting fluid spraying in tbi

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