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Join Date: Feb 2003
Location: Murfreesboro, TN, USA
Posts: 110
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anyone try to fix leaky injector?
This is the case when the injector body itself leaks, apparently from the swaged joint near the spray tip. I wonder if anyone has tried to tighten the swaged seal using a socket and pressing in a vise?
My other thought, if there are no plastic pieces inside, was to seal that joint with solder (appx 600 deg. F). Any thoughts or experience on the subject? ps: I already sent off for the two new replacements I need.
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Gene ____________ '86 944 NA '88 Citroën 2CV |
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12-05-2004, 06:44 AM
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Replace them. Leaking injectors are not fixable. Make sure it's the injector and not the seal to the fuel rail. Or a cracked fuel rail.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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12-05-2004, 11:06 PM
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Join Date: Feb 2000
Location: Kingsport, TN
Posts: 2,935
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Can a leaking injector be caused by deposits building up inside the injector? Recently, I sent my four off to be cleaned and balanced. From the testing results I received with the injectors, the improvement on paper is significant both in the amount of flow, the pattern, and the variance in flow rates. I am still waiting some other car parts so I have not had a chance to start the car yet. Therefore, the jury is still out. If there is noted improvement, I'm going to send two of my 8 cylinder engine's injectors for cleaning.
My injectors were not leaking, however. This was verified by the cleaning company on the initial benchline testing.
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Lawrence 1986 951 2002 SLK32 AMG 1987 328GTS 2011 528i |
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12-06-2004, 05:14 AM
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Join Date: Oct 2002
Location: South Carolina
Posts: 133
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They just wear out and leak eventually. The only option is to replace the injector. I however only replace injectors as a whole doing all four at once. Otherwise if the cars has some miles on it you have one cylinder running much better than the others but I am a nut like that!
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Randy Wilson Columbia South Carolina "SPEED COSTS! How fast do you want to go???" 1986 Porsche 951 1986 Porsche 928 S |
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12-06-2004, 09:19 AM
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Most of the flow restriction is a dirty screen. These are in the top of the injectors. You can take a two foot piece of hose that slips over the outlet end of the injector, fill the hose with solvent and blow the solvent back through the injector to clean/purge the screen.
If the screens are dirty then you may have rust inside the fuel system. The rails like to rust inside too.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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12-07-2004, 10:51 AM
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Join Date: Oct 2002
Location: nashville,tn
Posts: 1,124
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Does anyone know of a place that sellls the electronic tool that you can hook to your injector and pulse the voltage to open and close it while blowing solvent into the injector. Porsche has one, but I'm sure that there is a aftermarket one somewhere.
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86 944 daughters 88 944 step-sons 07 Ranger 4x4 I have tons of spare parts, let me know what you need. |
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12-08-2004, 04:19 PM
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1983 Porsche 944 2.5 liter
