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VEHICLE 1986 Chevy Blazer LS 4.3 143,000K ...

Sent to Car Experts July 12 05:20 PM

VEHICLE 1986 Chevy Blazer LS 4.3 143,000K miles
Problem:Starts with starting fluid but wont stay running.
fuel pump PSI is excellent,new fuel filter,new cap and rotor ,battery fine,alternator fine just wont fire
No one seems to be able to figure problem out

Help in Ohio

 

Optional Information:
1996 Chevrolet Blazer Vortec4.3

Already Tried:
replace fuel flter,cap,rotor,battery,fuel pump pressure check,alternator output,spark to coil

Customer (name blocked for privacy)
Status:  Closed   Value: $15
Answer
July 12 5:27 PM (7 minutes and 22 seconds later)
         
REPLIEDCheck Mark

Once you remove the air filter you will be able to view the throttle body. If you look into the throttle body you will see the injector. There is a good chance that the injector is either clogged or defective. The "key" to this issue is that it fires with the aid of starting fluid therefore the injector may not be working. Check with the AutoZone people for advanced diagnostics for this part.

Dan



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Reply
July 12 5:50 PM (23 minutes and 30 seconds later)
         
Reply to Dan's Post: I can't seem to understand that the air filter is in front. This is a sequential system from muy limited understanding.So there are six injecters or nodes. I wouldn't think all would be defective
Customer (name blocked for privacy)
Info Request
July 12 5:54 PM (3 minutes and 16 seconds later)
         
REPLIED to Info RequestCheck Mark

I don't believe this vehicle had multi-port fuel injection. The 1986 I remember had throttle body injection.

Do you know what you have for sure?



Edited by NYAnswer on July 12 2006 at 5:54 PM

My goal is to save you money and time, I have a simple and logical approach for troubleshooting technical problems.
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Dan -- Automotive Management -- 98% Positive Feedback on 613 Car Accepts
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Reply
July 12 5:55 PM (1 minute and 38 seconds later)
         
Reply to Dan's Post: Dan I am sorry it is a 1996 blazer
Customer (name blocked for privacy)
Answer
July 12 5:58 PM (2 minutes and 44 seconds later)
         
REPLIEDCheck Mark

Okay, now I understand what happened. I need to think this out a bit. I'll get back to you with an answer. This system is different then what I was thinking.



My goal is to save you money and time, I have a simple and logical approach for troubleshooting technical problems.
If you find my answer to be helpful, please remember to ACCEPT the Answer! Thank You!
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Dan -- Automotive Management -- 98% Positive Feedback on 613 Car Accepts
36 Plus Years of Direct Automotive Experience
Reply
July 12 6:00 PM (1 minute and 43 seconds later)
         
Reply to Dan's Post: Thank you I apologize..Typing hotshot I am not.
Customer (name blocked for privacy)
Info Request
July 12 6:38 PM (38 minutes and 13 seconds later)
         
REPLIED to Info RequestCheck Mark

I need to know if this problem just starting happening or did you just acquire the vehicle and it had the problem. It would be helpful to have some background info to sort this out.

Dan



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If you find my answer to be helpful, please remember to ACCEPT the Answer! Thank You!
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Dan -- Automotive Management -- 98% Positive Feedback on 613 Car Accepts
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Answer
July 12 6:59 PM (21 minutes and 26 seconds later)
         
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Dan -- Automotive Management -- 98% Positive Feedback on 613 Car Accepts
36 Plus Years of Direct Automotive Experience
Reply
July 12 7:32 PM (32 minutes and 45 seconds later)
         
Reply to Dan's Post: this problem started 3 weeks ago   hard starting then finally starting. i put injection cleaner in tank i don't know if that helped but it was starting but only after a number of tries.

It quit altogether and I had it towed to a garage to check out but it started right up the next day.they said they couldn't check something that was not broke.
it was ok for a week then it quit this time.Same pattern.That is when I had the things checked as I wrote to you about. I had some one come to check it out and the battery was low so we jumped it and it started right up. I drove it all day..Next day where i am at now
Customer (name blocked for privacy)
Answer
July 12 8:08 PM (35 minutes and 54 seconds later)
         
ACCEPTEDCheck Mark

Okay, now I have a better understanding of what's going on. We have an intermittent problem. You will have to contact a mechanic in your area that has a "Snap-On" scanner. This particular scanner allows the user to run onboard test while driving the vehicle. The scanner will detect a specific problem and store the information. I wouldn't want to take a guess that it could be this or that. We really need to zero in on the problem. I believe that there is a internal connection failing within the electrical system that has an effect on the fuel supply. I would hope that the "Snap-On" scanner can isolate and detect the issue.

Dan



My goal is to save you money and time, I have a simple and logical approach for troubleshooting technical problems.
If you find my answer to be helpful, please remember to ACCEPT the Answer! Thank You!
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Dan -- Automotive Management -- 98% Positive Feedback on 613 Car Accepts
36 Plus Years of Direct Automotive Experience
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