86 S2 Hydrolocked with fuel???
#46
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This is an interesting thread I am following closely. I may have a somewhat similar problem albeit my injectors are flooding like yours, but I definitely have excess fuel in the cylinders, but not getting proper spark. I will try to look at LH as Dave is suggesting to see if that may be my problem. Engine was re-assembled and the car hasn't run in 4 1/2 years. I am keenly waiting on reports from Roger as to whether it is an LH problem or not. I think mine may be due to the lack of proper spark.
#47
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Hi John,
MAF was fire damaged and has now been fixed.
"thermal runaway mode" so could this have been the reason why the car flooded? However the cylinders were filling up with the car not running.
This picture is showing how full the air guide was before the video. A LOT of gas.
MAF was fire damaged and has now been fixed.
"thermal runaway mode" so could this have been the reason why the car flooded? However the cylinders were filling up with the car not running.
This picture is showing how full the air guide was before the video. A LOT of gas.
To get that lower plenum full of fuel, at lest one of the intake runners had to fill and overflow backwards into the plenum!
#48
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Sean, Roger,
For giggles, open up both of the engine computers and check the eproms closely. First check to see if they are non-stock, secondly check for a cracked and/or broken pin...or bad solder joint on the eprom socket(doubtful).
Sorry it has been so long that my failing memory can't remember exactly which pin to check, but one specific bent/broken/cracked pin will do this exact scenario you have experienced.
Don't ask me how I know this, but I do have the T-shirt.
Cheers,
Dave
For giggles, open up both of the engine computers and check the eproms closely. First check to see if they are non-stock, secondly check for a cracked and/or broken pin...or bad solder joint on the eprom socket(doubtful).
Sorry it has been so long that my failing memory can't remember exactly which pin to check, but one specific bent/broken/cracked pin will do this exact scenario you have experienced.
Don't ask me how I know this, but I do have the T-shirt.
Cheers,
Dave
This "save" has a few fun issues to sort out and I think we've got a game plan, but you know how that changes. Bound and determined to make this POS a daily driver now.
#49
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I have always wondered if I had a slight bend in one of my connecting rods after I tried to start the car and it was hydrolocked. It never has seemed to idle as smooth as a Lexus V8 or a new suburban for that matter, but that could be this engine design and I am crazy.
#50
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I have always wondered if I had a slight bend in one of my connecting rods after I tried to start the car and it was hydrolocked. It never has seemed to idle as smooth as a Lexus V8 or a new suburban for that matter, but that could be this engine design and I am crazy.
2). Nothing to do with the design of the engine....sorry.
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3). Yes, you are....but that's an entirely unrelated issue.
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#52
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Each startup could re-pressurise the fuel system, and then bleed out into the throttle body, until it was totally full and burped.
#53
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I have always wondered if I had a slight bend in one of my connecting rods after I tried to start the car and it was hydrolocked. It never has seemed to idle as smooth as a Lexus V8 or a new suburban for that matter, but that could be this engine design and I am crazy.
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#55
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I'm wondering whether a failed FPR (this car has two pressure regulators from memory? I think its the LH-based Euro's which do?) could dump that much fuel into the throttle body through the vacuum lines with repeated start/run/shutoff (such as when moving the car around a driveway to make space).
Each startup could re-pressurise the fuel system, and then bleed out into the throttle body, until it was totally full and burped.
Each startup could re-pressurise the fuel system, and then bleed out into the throttle body, until it was totally full and burped.
#56
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Hilton - Very possible and I have already changed the two fuel pressure regulators and the damper. For grins I will pull a vacuum on the originals so see if they were bad or not.
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Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
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#58
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I found that the engine was hydrolocked after I changed the fuel pressure regulators and damper. So it is possible the air guide was filled from a leaking regulator.
However the filling of the cylinders was AFTER the regulators and damper were changed.
Could not check the regulators and damper as the trash (dustbin) man has been.
However the filling of the cylinders was AFTER the regulators and damper were changed.
Could not check the regulators and damper as the trash (dustbin) man has been.
#59
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Roger- Any worthwhile results to mention about this issue? Has it happened again to that engine? Did you have to do any deeper repairs beyond the fuel delivery system?
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As always - Life and other cars - have got in the way.
Sean is going to make me a new injection harness and I have a set of 24 Lb 4 hole injectors with GB adapters ready to add.
Hopefully that should correct the issue.
Sean is going to make me a new injection harness and I have a set of 24 Lb 4 hole injectors with GB adapters ready to add.
Hopefully that should correct the issue.