This exact same thing happened to me..running fine one day, and the other like crap..the intake was full of fuel and i pulled off the fuel dampener and it worked great...would have never figured it out if it wasn't for this video..I ordered another to replace this issue.. thanks for the help
Congratulations! I owned a 1989 928S4 for 31 years and thoroughly enjoyed the car. I did most of the maintenance myself because most Porsche mechanics never worked on this car and did not know how.. I let it go when I retired and moved to Florida at which time the car had 194, 341 miles on the odometer. All the work you have put in on this car is well worth it. Enjoy!!!
I can totally understand why regular mechanics don't understand the car. The sequence of events to reassembly is unknown until the 3rd removal and installation scenario!
Wow! Lots of miles! That's fantastic you were able to properly perform the maintenance on it! Seems to be the top reason why so many of these cars Sat and rotted away.
@goldmarkg That's awesome! My favorite hobby is restoring cars. It's so satisfying seeing it improve. I'm performing rust removal on one of my cars. I often look back at the before-and-after pics. Did you buy it new?
I am pretty choosy about what I set on the car. No tools or anything scratchy without a microfiber. That will change once it's polished out. Unfortunately, there's not much alternative to leaning over the fender to get to things. Don't like doing it, but porsche didn't give much of an option.
@@ThrottleGrotto Good to hear. I’m sure you’re protective of the new paint, which looks fantastic, btw. I highly recommend some fender covers. If you keep the car long-term, you’ll be glad you have them.
You should replace both regulators and the fuel damper when you are in there, they are most likely all dried out and ready to crack. Don't ask how I know LOL
I just can't bring myself to do an LS swap. I just don't want the car to sound like all the other LS cars. My personal preference. They're great swaps, but I prefer a little more off the beaten path.
A wonderful car I remember the first ones on the street they looked like spaceships 🚀
Excellent troubleshooting skills!
Yeah a wonderful unique characterful engine
This exact same thing happened to me..running fine one day, and the other like crap..the intake was full of fuel and i pulled off the fuel dampener and it worked great...would have never figured it out if it wasn't for this video..I ordered another to replace this issue..
thanks for the help
Glad it helped you get back on the road!
they are fun when they are dialed in! enjoy! I have a '91S4
Well it's not what I expected, but soon it's going to get a lot more fun.
Congratulations! Good find. And good fix!
I noticed a box of Datsun master cylinders on your bench. 😁
Yes, there are a bunch of core masters there. Need one?
@@ThrottleGrotto no sir, thank you. I converted mine to a Tilton 3 master setup. Super nice.
Congratulations! I owned a 1989 928S4 for 31 years and thoroughly enjoyed the car. I did most of the maintenance myself because most Porsche mechanics never worked on this car and did not know how.. I let it go when I retired and moved to Florida at which time the car had 194, 341 miles on the odometer. All the work you have put in on this car is well worth it. Enjoy!!!
I can totally understand why regular mechanics don't understand the car. The sequence of events to reassembly is unknown until the 3rd removal and installation scenario!
Wow! Lots of miles! That's fantastic you were able to properly perform the maintenance on it! Seems to be the top reason why so many of these cars Sat and rotted away.
Yes, it was truly a labor of love. If I were younger (I'm 77) I would do it all again. Those days are part of my fondest memories.
@goldmarkg That's awesome!
My favorite hobby is restoring cars. It's so satisfying seeing it improve.
I'm performing rust removal on one of my cars. I often look back at the before-and-after pics.
Did you buy it new?
My brother leased it new and I bought it when the lease was up. I could not stand to let it go.
Congrats on the find and repair. Also, it’s your car, but you’re killing me setting stuff on the new paint and leaning on the aluminum fenders.
I am pretty choosy about what I set on the car. No tools or anything scratchy without a microfiber. That will change once it's polished out.
Unfortunately, there's not much alternative to leaning over the fender to get to things. Don't like doing it, but porsche didn't give much of an option.
@@ThrottleGrotto Good to hear. I’m sure you’re protective of the new paint, which looks fantastic, btw. I highly recommend some fender covers. If you keep the car long-term, you’ll be glad you have them.
A TDI swap?
@@albertfrank6a big diesel swap would be interesting, but really expensive
Well done! Stay strong big guy :)
It's slowly breaking me. Or I am breaking it. Either way, one (or both) of us will be laying on the garage floor soon.
@@ThrottleGrotto lol, nah, you've got this... Car is looking amazing though, well done for getting this far. Im still waaaay behind you!
You should replace both regulators and the fuel damper when you are in there, they are most likely all dried out and ready to crack. Don't ask how I know LOL
I don't doubt that the other two are far behind. If I can keep it running for a few months, I'll be surprised at this point.
How did you figure out it with the vacuum fuel Reg ?
I pulled off the vac line and it was filled with fuel. Diaphragm was split inside and leaking gas
LT Swap it with Holley fuel injection.................
I just can't bring myself to do an LS swap. I just don't want the car to sound like all the other LS cars. My personal preference. They're great swaps, but I prefer a little more off the beaten path.