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Bad oil pump on 97' 250 Trail Blazer

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  #1  
Old 07-19-2004 | 02:34 PM
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Default Bad oil pump on 97' 250 Trail Blazer

My kids ran at least 5 tanks of gas through TB before anyone realized it wasn't using oil. I have oil flowing into pump, but nothing coming out. Two questions:
Do I have to remove engine to pull pump out?
TB still runs good, but I'm concerned about long term effect on the engine. I just bought it last month so have no idea how long pump has not been working. Anything I can do to check for extent of damage?
 
  #2  
Old 07-19-2004 | 02:44 PM
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Default Bad oil pump on 97' 250 Trail Blazer

how do u no its not working??
 
  #3  
Old 07-19-2004 | 02:57 PM
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Default Bad oil pump on 97' 250 Trail Blazer

When I open the bleed screw with the engine running I get no pulse of oil coming out or if I disconnect the oil inlet line to the engine (while running) I get no oil either.
 
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  #4  
Old 07-19-2004 | 08:18 PM
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Default Bad oil pump on 97' 250 Trail Blazer

You don't have to remove the engine. You can get a block off kit from hpd. I would check the compression on it and find out if the top end has ever been done. If it hasn't, then I would plan on doing a top end in the near future before your stock pistion takes a dump on you. Replace it with a weisco.
 
  #5  
Old 07-19-2004 | 11:15 PM
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Default Bad oil pump on 97' 250 Trail Blazer

Am I right in assuming that if I remove the oil inlet line that I should get oil pumping out of it when the engine is running?
I drained the oil tank and mixed 40:1 into gas tank. Any issues with running it like that for awhile?
 
  #6  
Old 07-19-2004 | 11:22 PM
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Default Bad oil pump on 97' 250 Trail Blazer

if ur real worried block the oil get a single throttle cable and ust run 40:1 thats what im gonna do
 
  #7  
Old 07-19-2004 | 11:37 PM
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Default Bad oil pump on 97' 250 Trail Blazer

well obiously it was pumping oil because if it wasnt it would take only a few seconds to sieze up. but if u didnt get oil coming out then i dunno what to tell u.
 
  #8  
Old 07-20-2004 | 12:00 AM
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Default Bad oil pump on 97' 250 Trail Blazer

The 250 uses very,very little oil. Like mudmaster said if it was not working then it would seize up in seconds. I can run all summer on 1 tank of oil and not run out.You would have to go through 15-20 tanks of fuel before your light will even flicker. Dont worry it is working like it should. I have had mine for 4yrs now and only fill up 2 times a year. Whatever you do do not run with no oil in the tank without at least a block off kit. But the kit is not needed. You are fine.
 
  #9  
Old 07-20-2004 | 04:16 PM
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Default Bad oil pump on 97' 250 Trail Blazer

I appreciate the feedback. I was thinking it should be using the same amount of oil you would use when mixing at 40:1, which would be 64 oz. for 20 gallons of gas.
I sure would feel better if I could test the output of the oil pump though. Ideas?

Any tricks I should know about before I try to pull off my starter?
 
  #10  
Old 07-21-2004 | 03:35 PM
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Default Bad oil pump on 97' 250 Trail Blazer

herm u got pm
 
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