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Search: Posts Made By: Mark611
Forum: New User Introductions   07-07-2019, 07:18 AM
Replies: 3
Views: 44
Posted By Mark611
Also, I did have the coolant temp sensor go bad....

Also, I did have the coolant temp sensor go bad. It was very corroded when I yanked pig tail off. Replaced pigtail and sensor and car fired right up. I remember a lot of black smoke and backfiring...
Forum: New User Introductions   07-06-2019, 08:44 PM
Replies: 3
Views: 44
Posted By Mark611
Sounds like fuel pump might be going. I had very...

Sounds like fuel pump might be going. I had very similar symptoms when fuel pump was getting ready to fail. I had to prime engine to start car by turning key from off to on several times before I...
Forum: LT1 | LT4 | L99 Engine Tech   05-25-2019, 10:11 PM
Replies: 10
Views: 239
Posted By Mark611
Swap an injector to see if #3 is leaking. ...

Swap an injector to see if #3 is leaking.


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Forum: LT1 | LT4 | L99 Engine Tech   05-19-2019, 01:05 PM
Replies: 2
  Question 96 LT1 P0336 Code
Views: 105
Posted By Mark611
Where did you get opti? I think typically it’s...

Where did you get opti? I think typically it’s the optical sensor that fails due to moisture. Did you get an AC Delco or AutoZone special? I have had bad experiences with another LT1 I had and an...
Forum: General Tech   03-29-2019, 04:24 AM
Replies: 2
Views: 225
Posted By Mark611
Might be straight sludge in there. Drop pan and...

Might be straight sludge in there. Drop pan and check it out


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Forum: LT1 | LT4 | L99 Engine Tech   01-12-2019, 10:41 PM
Replies: 5
Views: 674
Posted By Mark611
I had a similar problem not too long ago. My car...

I had a similar problem not too long ago. My car ran very rich. Ended up being a corroded temperature sensor for the water pump. I ended up replacing both sensor and pigtail. Runs perfectly now.

...
Forum: LT1 | LT4 | L99 Engine Tech   09-29-2018, 09:10 PM
Replies: 9
Views: 658
Posted By Mark611
There were days mine wouldn’t start at all...

There were days mine wouldn’t start at all either. Pull pigtail off of that sensor and check for corrosion.


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Forum: LT1 | LT4 | L99 Engine Tech   09-29-2018, 07:02 PM
Replies: 9
Views: 658
Posted By Mark611
I just went through this last week with my LT1....

I just went through this last week with my LT1. It was a head scratcher because I had good fuel pressure, good air, and I had spark. It would randomly start fine and run fine. But sometimes it would...
Forum: LT1 | LT4 | L99 Engine Tech   08-03-2018, 11:11 AM
Replies: 3
Views: 197
Posted By Mark611
I had an ignition switch go out that acted...

I had an ignition switch go out that acted similarly; when I took apart dash/steering column I was able to see that a few of the wiring bundles had melted into the ignition switch. Not sure what...
Forum: LT1 | LT4 | L99 Engine Tech   07-30-2018, 09:30 PM
Replies: 9
Views: 611
Posted By Mark611
O2 sensor and EGR valve Sent from my...

O2 sensor and EGR valve


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Forum: LT1 | LT4 | L99 Engine Tech   07-25-2018, 02:20 PM
Replies: 17
Views: 1,039
Posted By Mark611
Does your opti have the drain hole? Or is it the...

Does your opti have the drain hole? Or is it the version with no moisture drain?


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Forum: LT1 | LT4 | L99 Engine Tech   07-18-2018, 06:21 PM
Replies: 17
Views: 1,039
Posted By Mark611
My LT1 did the same thing after driving on a new...

My LT1 did the same thing after driving on a new fuel pump for about a week. I could even hear pump turn on when I turned key to on (not all the way to start, but ‘on’ to supply electricity). I ended...
Forum: LT1 | LT4 | L99 Engine Tech   05-03-2018, 04:12 PM
Replies: 6
Views: 394
Posted By Mark611
Piston rings going bad, would be my guess. How...

Piston rings going bad, would be my guess. How many miles on motor?


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Forum: LT1 | LT4 | L99 Engine Tech   02-21-2018, 09:55 PM
Replies: 8
Views: 480
Posted By Mark611
I’d replace plugs and wires too...yank a plug and...

I’d replace plugs and wires too...yank a plug and see what it looks like. May have fried them depending how hot it got


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Forum: LT1 | LT4 | L99 Engine Tech   02-21-2018, 09:52 PM
Replies: 8
Views: 480
Posted By Mark611
You changed optispark? Sent from my...

You changed optispark?


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Forum: LT1 | LT4 | L99 Engine Tech   10-15-2017, 09:43 PM
Replies: 11
Views: 1,576
Posted By Mark611
Swap a fuel injector with another cylinder to see...

Swap a fuel injector with another cylinder to see if you have a leaky injector


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Forum: LT1 | LT4 | L99 Engine Tech   10-08-2017, 09:01 PM
Replies: 3
Views: 995
Posted By Mark611
Tap is the lifters lacking oil due to...

Tap is the lifters lacking oil due to insufficient oil flow inside crank case. They are hydraulic lifters requiring motor oil to work properly. I suspect oil pump. Same thing happened to my car. I...
Forum: LT1 | LT4 | L99 Engine Tech   09-24-2017, 08:44 AM
Replies: 4
Views: 396
Posted By Mark611
I have had the rubber fuel line come off inside...

I have had the rubber fuel line come off inside the tank after I changed my pump...forgot to tighten a clamp


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Forum: LT1 | LT4 | L99 Engine Tech   09-23-2017, 05:36 PM
Replies: 4
Views: 396
Posted By Mark611
Is the fuel pump running/pressurizing line when...

Is the fuel pump running/pressurizing line when you turn key to 'run' (not cranking to start). Should be able to hear it turn on when in 'run' position with car door open. If you don't, either bad...
Showing results 1 to 19 of 19

 
 
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