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Rhubie
Joined: 15 Jun 2017
Posts: 72
Location: ND
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 Posted: Fri Jul 28, 2017 4:50 am Post subject: Cleaning Injectors |
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Yesterday I got all my parts in order.
She ignites and dies after idling for a second or two.
I checked over my work and all looked good until I pulled the injectors.
All 4 were spraying like garbage including a brand new one I bought.
So I bought some break cleaner and cleaned off the tips as well as the outside to make them all shiny.
Retested them with a switch that connected the 87 to 30 terminal on the fuse. They sprayed better but not well.. Still a little stream on a couple with one being flat out trashed..
But I still had a little hope for starting her so I could put some fuel system cleaner in whilst it running. I got her to idle for several seconds as well as be responsive to gas! SUPER EXCITED
BUT.. The injectors are still to blame I suspect and are flooding my engine. They did sit around for about a year with gas in the tank.. SO probably rusted.
I tried back flushing an old injector but couldn't get it to work.
I want to try to salvage these injectors first.. Any ideas on how to clean them?
ALSO if you have injectors that do work don't be afraid to message me with a quote.
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1980 Porsche 924 Weissach Commemorative Edition |
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Eric P
Joined: 21 Jun 2017
Posts: 175
Location: NY, USA
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| Posted: Fri Jul 28, 2017 5:53 am Post subject: |
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I fiddled with my old ones a bit and wasn't able to get them to spray well. I even tried back flushing in an ultrasonic cleaner. I ended up buying new injectors on ebay for $22.75 each. It made a world of difference. These are the ones I bought:
http://www.ebay.com/itm/Standard-FJ46-NEW-Fuel-Injector-AUDI-BMW-PORSCHE-VOLKSWAGEN-75-86/252965756616
They're a standard FJ46 injector. You might even be able to find them cheaper. I know it's about $100 for all 4, but it's well worth the money to have a car that runs well.
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1980 924 NA, US model
1987 924S, US model |
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Jakkq
Joined: 29 Sep 2008
Posts: 810
Location: Omaha, Nebraska
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| Posted: Tue Aug 15, 2017 8:08 am Post subject: |
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| Eric P wrote: | I fiddled with my old ones a bit and wasn't able to get them to spray well. I even tried back flushing in an ultrasonic cleaner. I ended up buying new injectors on ebay for $22.75 each. It made a world of difference. These are the ones I bought:
http://www.ebay.com/itm/Standard-FJ46-NEW-Fuel-Injector-AUDI-BMW-PORSCHE-VOLKSWAGEN-75-86/252965756616
They're a standard FJ46 injector. You might even be able to find them cheaper. I know it's about $100 for all 4, but it's well worth the money to have a car that runs well. |
Awesome. I stumbled upon these yesterday and was going to ask someone if they would actually fit the 924 but I think you just answered my question for me ha.
| Rhubie wrote: | Yesterday I got all my parts in order.
She ignites and dies after idling for a second or two.
I checked over my work and all looked good until I pulled the injectors.
All 4 were spraying like garbage including a brand new one I bought.
So I bought some break cleaner and cleaned off the tips as well as the outside to make them all shiny.
Retested them with a switch that connected the 87 to 30 terminal on the fuse. They sprayed better but not well.. Still a little stream on a couple with one being flat out trashed..
But I still had a little hope for starting her so I could put some fuel system cleaner in whilst it running. I got her to idle for several seconds as well as be responsive to gas! SUPER EXCITED
BUT.. The injectors are still to blame I suspect and are flooding my engine. They did sit around for about a year with gas in the tank.. SO probably rusted.
I tried back flushing an old injector but couldn't get it to work.
I want to try to salvage these injectors first.. Any ideas on how to clean them?
ALSO if you have injectors that do work don't be afraid to message me with a quote. |
Did you ever get her running? I believe I am having the same issue here, but have yet to test a couple of my injectors because the tips of a couple injector wires snapped on me from their old age. I could tell the lines were clogged with nasty buildup as well so this may be another possible issue why injectors may not be releasing gas
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1979 Porsche 924- Snailshell
http://porsche924workblog.blogspot.com/ |
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morghen
Joined: 21 Jan 2005
Posts: 9095
Location: Romania
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| Posted: Tue Aug 15, 2017 3:39 pm Post subject: |
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Fuel pump the right one?
Fuel pump getting enough amps?
Any restriction on the fuel filter or fuel acumulator?
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Supercharger and EFI kits
https://www.the924.com |
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