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2003 Protege5 Engine questions

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  #1  
Old 03-22-2023, 08:38 AM
MervsMods's Avatar
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Default 2003 Protege5 Engine questions

Hello All!

I have a 2003 Protege5 (Automatic) and have a lot of questions.

1. When cold, engine starts right up, but smoke bellows out the exhaust. Removed the spark plugs and found oil pooled on top of the piston. Did a compression check of all cylinders, and found the following from 1 to 4: 75, 60, 70, 160.

2. Once it's warmed up, it WILL NOT idle. The smoke disappears, but if I don't keep the engine revved above 1500, it dies. Idle Air Control Valve has been replaced. EGR Valve has been checked/cleaned. No leaks on the intake manifold. No vacuum leaks.

History that I know of:

Bought the car, and possibly had a blown head gasket. Replaced it. Radiator had a crack. Replaced it. It ran fine for about a month, and now I have the issues above. I'm suspecting bad valves, warped head, bad rings, or cracked block. (have been doing a TON of research)

Can you guys help pinpoint what the causes of the oil/smoke, low compression on 3 cylinders, and why it just will not idle?
 
  #2  
Old 03-25-2023, 04:46 AM
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Sounds like the engine is junk.
 
  #3  
Old 03-27-2023, 02:22 AM
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It is solved?
 
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Old 03-27-2023, 09:39 AM
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Sorry to hear you went through all that effort and expense. With compression numbers like that, the engine needs to be rebuilt or replaced.

You could do a leak down test to narrow it to rings, valves, gaskets, but I don't think the outcome will change.

 
  #5  
Old 03-27-2023, 04:19 PM
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Have a "new to me" engine on the way. So we'll see. I looked around (not that hard, because I do not have the tools/space) for an engine rebuild kit, and with new pistons/rings/all that stuff, it would have cost more than to just by a used (but good) engine.

So here's hoping!!
 
  #6  
Old 03-28-2023, 09:49 AM
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Definitely post back on progress. A few pics would be nice too.
 
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