911 Fuel Line Replacement and Engine Out

What Happened

On Septeber 13, 2025 at 6:00am I was warming up the car to attend Cars & Coffee. While it was warming up in front of the house, I heard the pitch of the engine change, went lower and started to struggle. As I looked out front from the garage I could see fluid leaking all over the place. A high pressure fuel line had burst and fuel was spilling from the top of the engine and flowing over everything.

Had this happened but 15 minutes later, I would have been on the road and the car would have caught fire and been a complete loss. I was blessed it happened when it did! Here is a picture of it flowing.

Apparently the fule lines had been done by Porsche Atlanta, but uing stock lines and over 5 years previous – which apparently is their lifetime.

After a bunch of research on how to repair I determined to do it the “correct” way and pull the engine, as it would be simpler when actually replacing the lines and I could do all of the “while your in there” items. I will list those later. I had also always wanted to pull an engine in a car and replace it.

I did have some experience as well. My buddy Jim Newmann had removed and replace a few of his and I was able to help, so I knew the overall process and tools needed. Had I not had this opportunity to help him on his cars, I would probably have just taken it to a shop.

Lessons Learned

  • Have a copy of the Bently manual and other books like 101 Projects for your 911 handy
  • Have access to the PET diagrams for your car so that you can reference needed part numbers and how things fit together.
  • Put the engine at top dead center before you drop the engine. This will help make sure you know where the engine is if and when you need to pull the distributor.
  • Use a spreadsheet to document what you do and in what order you do it and to leave yourself notes as you go. Can also write it down, I just do everything electronically so I cant loose it.
  • Take a lot of pictures. If you think you have taken too many, take more. You never know what you may need a picture of later!
  • As you remove parts, place them in plastic bags and label them. Trust me on this.
  • As you go clean electrical connections
  • As you go clean everything you can
  • On a G Body car, you can simply remove the transmission shift bolt under the car, no need to take it apart inside the tunnel from inside the car.
  • Use multiple floor jacks to support. One for the transmission, and two for each side of the engine.
  • Do not use Quick Jacks to lift the car when removing the engine. You might be tempted to lift it “just a bit more” and the car could fall off the jacks. Do not ask how I know that.
  • Instead, get a set of 6 ton floor jacks and side lift paddles. Put the floor jacks on the torsion bar tunnel and left each side, alternating, until you are high enough to drop and slide the engine out.
  • Yes – replace the that the intermediate flanges (930 110 459 00) that the intake sits on top of, as its a pain to redo once the engine is back in the car and you have a vaccum leak.
  • Get help! While you can do this yourself if you take your time, help make it go faster and makes gooder memories! I will always remember the time spent with my son Nathan pulling the engine! Love ya buddy!

The List

Here is the list and order of operations I used.

1988 Porsche Targa Maintenance

Engine Out — 91 logged steps

DateStepNotesneeds
Remove Engine
Oct 01, 2025Raise car
Oct 01, 2025Drain OilReplaced
Oct 01, 2025Disconnect negative battery cableReplaced
Oct 01, 2025Disconnect hard oil lineReplaced
Oct 01, 2025Disconnect rubber oil lineReplaced
Oct 04, 2025Remove rear sway bar13mm to body, 19mm to drop links – had to lower car as QJs were blocking, put on jackstands and removed bar, put back on QJs
Oct 04, 2025Disconnect accelerator cable armpried socket off ball and slide wire loop off the other sideReplaced
Oct 04, 2025Remove tires19mmReplaced
Oct 04, 2025unbolt lower shock boltsto allow removal of axels, 22mm, support trailing arm while removingReplaced
Oct 04, 2025Remove CV Joints and axels from transmission8mm hex bolt and 32mm outside axel nutReplaced
Oct 04, 2025Disconnect clutch slave cylender13mm nuts, this way wont have to bleed clutchReplaced
Oct 04, 2025Disconnect starter solenoid electrical connections13mm nut, left on starter, both wires goto nut and yellow wire to top crimp connectorReplaced
Oct 04, 2025Disconnect reverse backup switch and speed sender from transmissionpassenger side – two wires covered by a boot… have picture but not 100%sure they are correct place in pic speed sender is on driver side and is held in by 10mm bolt and a flat retainerReplaced
Oct 04, 2025Disconnect transmission ground strap13mm and left bolt on the car – ground strap goes between the two washersReplaced
Oct 04, 2025Disconnect heater hoses from exchangersReplacednew hoses and bandsHoses 930 211 196 00, 901 211 194 00, 4 clamps 999 512 349 02
Oct 11, 2025Remove speaker box to allow access to shift coupler cover
Oct 11, 2025Disconnect two speedometer sender wires – 2 of them, and under car, pull back rubber boot cover and remove shift coupler via hex bolthad already disconnected sender from driver side of transmission, so put the wires back together inside car… will need to remember to route the think black wire and sensor over the top of transmission on replaceReplaced – unsure if correct top to bottom
Oct 11, 2025Disconnect A/C compressorremovedlater
Oct 11, 2025Remove electric panel coverleft wingnut on carReplaced
Oct 11, 2025Remove plastic coil cover
Oct 11, 2025Disconnect main 14 pin harness for engineReplaced
Oct 11, 2025Disconnect ground wires from intake runner 1 – left bolt on runner o we dont loose itReplaced
Oct 11, 2025Disconnect cylinder head temp sensor (marked in car as top) with brown wire, engine speed sensor (middle) with grey wire, reference sensor (bottom) with brown wire had to remove the lock wires firstReplaced top sensor loose
Oct 11, 2025Disconnect breather hoses2 large and one smallReplaced
Disconnect accelerator linkage cableReplaced
Oct 11, 2025Disconnect / remove large plastic elbow tube between heater blower fan and heat exchanger feed tubeReplaced
Oct 11, 2025Disconnect cruise control cable from throttle bracketReplaced
Oct 11, 2025Disconnect Oxygen sensorReplaced
Oct 12, 2025Disconnect multin pin engine harness connector near left shock towerReplaced
Oct 12, 2025Disconnect Power brake vaccuum hoseReplaced
Oct 12, 2025Disconnect fuel return line, left side rear on fuel railReplaced
Oct 12, 2025Disconnect fuel supply line, top of fuel filterReplaced
Oct 12, 2025Removed KN Air Filter and mounting braket (blue)Replaced
Oct 12, 2025Removed idle speed control sensor connector and clipReplaced
Oct 12, 2025Removed top throttle position sensor connector and clipReplaced
Oct 12, 2025Removed bottom throttle position sensor – missing clip!!Replacedclip
Oct 12, 2025removed air flow box for needed clearanceReplaced
Oct 12, 2025Remove blower fan for clearanceReplaced
Oct 12, 2025set front jackstands just in casesaved my life
Oct 12, 2025dropped car to the left 8 inches, landed on motor, shit pantsrear motor mounts
Oct 12, 2025reconnected shocks and tires, jacked up via tires, pulled engine
Oct 12, 2025lowered car via quickjacks and now on wheels
Oct 13, 2025Found small spring on top of engine under accelerator spring
While Out
Oct 13, 2025Pulled injectors with clips and caps and labeledReplaced
Oct 16, 2025Injectors send for cleaning – DONE
Oct 28, 2025breather hose – rear of driver intake manifoldReplaced
Oct 30, 2025disconnect accelerator linkage on air intakepried apart with screw driverReplaced
Oct 30, 2025removed three sensor bracket and tagged sensors with top,middle,bottomReplaced
Oct 30, 2025removed accelerator return spring under air intakeReplaced
Oct 30, 2025removed retaining bolt for middle fuel line holder bracketNA
Oct 30, 2025removed diagnostic bracket boltNA
Oct 30, 2025removed three fuel line bracket bolts rear of intake, 2 bolts on driver, 1 bolt on drinker sideReplaced
Oct 30, 2025removed long thin breather hose, top position on throttle body, went to nothing, was hanging in engine when removedwas open to atmosphereReplaced
Oct 30, 2025removed bottom small hose on throttle body rear, went to a T connector which goes to twin fuels regulator i think thats what they are called
Oct 30, 2025removed air intake nuts, two studs came out as wellwill need to figure out a fixReplaced
Oct 30, 2025removed air intake, found little bastard leak in lineReplaced
Oct 31, 2025split the air intake by removing middle rubber gasketReplaced
Oct 31, 2025removed Idle actuator Air Control Valvewasher and bolt left on intake – need plastic bagsReplaced
Oct 31, 2025removed fan bolt and coverReplaced
Oct 31, 2025removed fan and alternatorthree nuts 7mm 8mm and 10mmReplaced
Nov 01, 2025removed engine support bracketneed new bolts and nuts, was missing oneReplaced
Nov 01, 2025put engine at top dead center for #1 in order to remove distributor
Nov 01, 2025Removed distributor17mm bolt used open end wrenchReplaced
Nov 01, 2025Removed all four valve covers – had to loosen catalytic bolts for lower driver sideremember to tighten exhaustReplaced
Jan 01, 2001cleaned valve covers, fan and other parts at RedlineReplaced
Nov 05, 2025Reinstaled cleaned valve covers with new gaskets and hardwareReplaced
Nov 05, 2025removed engine surround – front three partsReplaced
Nov 05, 2025replaced spark plugsReplaced
Nov 06, 2025Clean engine surround pan parts and paintedReplaced
Nov 06, 2025Replaced distributor o-ring, reinstalled distributor, spark plug wires and rotor and capReplaced
Nov 07, 2025Replace oil thermostat o-ringfrom ebsReplaced
Nov 07, 2025Replace breather cover gasketfrom ebsReplaced
Nov 07, 2025Replace oil pressure switchnew switch is shorter and has a washer, took picturesReplaced
Nov 08, 2025Replace two air intake studs into blockReplaced
Nov 08, 2025Replace air intakeReplaced
Nov 08, 2025Replace fuel injectors and fuel railsReplaced
Nov 08, 2025Replace Fuel linesall lines except fuel return line – need to figure that connection outReplaced
Replace pulley seal or whatever is leaking at rear of engine
Nov 14, 2025Replace alternatorReplaced
Replace fuel pump
Clean engine compartment and install new sound padReplaced
Rear brake lines.,
Install Engine
Nov 29, 2025All steps opposite of REMOVE list
Dec 01, 2025Pressurize fuel systemdone
Add Oil and startdone!