Question about 1991 Chevrolet C1500

1 Answer

1990 full blazer ignition timing degrees

I just put a new motor in my 90 blazer. 350 ci 330 horse. I do not have the ever so important label under the hood. I was told to set it to 0 degrees with the advance unplugged. When I plug it back in (with the key off) the timing reads about 15 degrees btdc. When i drive it it is sluggish. this cant be right. Can some one help me please.

Thanks Jason Brown
Ocala Florida

Posted by on

  • paul erickson
    paul erickson May 11, 2010

    the stock blazer didnt make 330 hp
    so what was done to the engine?
    this will make a big difference where your timing is to be set.



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 585 Answers

If the ECM is still in and working, "0" deg unplugged would be correct. But are the timing marks correct? If the marks are lined up statically on "0" deg. is the #1 piston at TDC? Also important is for the ECM to be happy with the feedback it gets from it's sensors so it is running "in loop" If the "check engine" light is on, it will run but poorly. Make sure all sensors are in place and connected properly.

Posted on Dec 17, 2008


1 Suggested Answer

  • 2 Answers

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

a 6ya Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer


Need some model info on your Blazer to be sure if you have a electric instrument cluster.

In the mean time check out this post for some more info.

1990 electric instrument cluster speedo The 1947 Present Chevrolet GMC...

Aug 11, 2017 | Chevrolet Blazer Cars & Trucks

1 Answer

1987 Chevy k5 Blazer, heats up. The manifold gets a cherry red, and the plug wires started to melt.

check the timing of the ignition as hot exhaust is a good indication of retarded ignition timing. Fire coming out past the exhaust valves because the mixture ha been ignited too late. Have this check out fast as you run the risk of burnt valves . The timing should be about 12 degrees before TDC not 12 degrees after TDC. IT will be the cause of the engine getting hot as well.

Jan 07, 2014 | Chevrolet Blazer Cars & Trucks

2 Answers

Where is the ignition control module located on a 1990 buick lesabre

For 1990 Buick Lesabre 3.8L FI OHV 6cyl the Control Module-Ignition is located: Under hood, passenger side, front engine area, mounted on upper passenger side of cylinder head under ignition coil.

Hope helps (remember to rate this answer).

Apr 11, 2011 | 1990 Buick LeSabre

1 Answer

Timing specs for a 65 Olds Cutlass 330 CI

Timing is 7 and 1/2 degrees BTDC. Hope this helps.

Sep 02, 2010 | Oldsmobile Cutlass Cars & Trucks

2 Answers

1990 chevy blazer 350 ci throttle body fuel injected . the motor is flooding out u can see the injectors keep dumping fuel into the throttle body

Sounds like you have an injector leaking. Have someone just cycle the key on and off to run the fuel pump but don't crank the engine. If you see fuel dripping from the injectors, unbolt the injector cover on the throttle body, remove the injectors and replace the orings around the injectors.

Jul 22, 2010 | 1991 Chevrolet C1500

1 Answer

1990 Chevy Blazer K5 5.7 engine: has engine ping

The temperature sensor is where I would start. If the sensor tell the computer that the engine is cold it will initiate the warm up mode which includes advancing the timing along with a rich fuel mixture. Unfortunately, there are many sensors that assist in controlling timing and fuel mixtures that it is difficult for me to give you a guaranteed solution.

May 27, 2010 | 1990 Chevrolet S-10 Blazer

1 Answer

No power to wiper motor, 1990 chevy s-10 blazer. No power to fuse block (just the wiper fuse)

It would have to be in the ignition switch,this ,when turned on,sends power to the fuse.

Feb 25, 2010 | 1989 Chevrolet S-10 Blazer

1 Answer

1990 s10 blazer 4.3 not getting fire

sounds like the ignition module under the rotor inside the distributor

Dec 14, 2009 | 1990 Chevrolet S-10 Blazer

1 Answer

From central locking it locks the driver door but it won't unlock from the remote just manuallyBMW 330 ci 2003

Put a new small battery in the remote. If you have already done this and its not the problem. Let me know.

Aug 14, 2009 | 2003 BMW 330

1 Answer

2003 BMW CI Convertable Radio/CD Problem

Had the same problem with my '03 330xi. Navigation worked fine but radio and CD did not work at all. I opened the fuse box located in the glove compartment to check the three fuses associated with the navigation system and radio. #7, #39, and #41. All three fuses were intact so I put them back in. I then put the key into the ignition, turned it to position 2 and miraculously the radio came to life. I guess it acted as some type of reset?

Aug 31, 2008 | 2003 BMW 330

Not finding what you are looking for?
1991 Chevrolet C1500 Logo

Related Topics:

306 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

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

Answer questions

Manuals & User Guides