SteveG

You said earlier, "again" referring to low battery. While you are there (auto store) get a volt meter. Less than 12.5V can give strange behavior that resembles dead. See threads on parasitic drain, trickle charger, battery cut off switch. Good luck.

88porsche928

hi, i put the fully charged battery in "charger said it was fully charged" then I got my friend to crank it. The spark plug I pulled out sparked.

88porsche928

Is it possible the spark was not great enough?

88porsche928

how much would it cost for some one to repair this car? I don't want to give up but I don't want to give up but I have not drove my car for a while.

88porsche928

DR BOB so since I did see a spark you are saying its most likely a wire harness problem?

Mrmerlin

since your getting spark then the CPS is connected but the way the knock sensors look its time to start replacing these part before you try to get the car running. See my previous post about what you need to replace. If you just want to get it running then I would look at the fuel pump not functioning and then check the fuelinjectors for function.

dr bob

88--

Re-read my post about spark and fuel. If you have spark, take a look at the fuel section next.

Diagnosis and troubleshooting is a process of elimination. Starting with the "most likely" and "easiest to check", work your way through the list of possible causes until you find and fix the actual problem or problems.

Correct the routing of the wiring, including spark plug cables. Make sure the firing order is correct and the correct plug wires are attached to the correct plugs. There are numbers on the wires, and behind where the wires attach to the caps.


Cost to diagnose and repair would be a SWAG at best, sine there's no way to tell what's been damaged. Call around to recommended San Diego 928 shops and ask the question there. You'll likely find that they will quote you an hourly rate for diagnosis and repair, with a minimum amount flagged just to remove and replace the intake again. I'm not sure I'd even look at it for less than a $2k upfront commitment, were I still in the repair biz.

Did you ever figure out if there was something dropped into a cylinder, and if there was, did you get it out?

88porsche928

update, i finally got a hold of the mechanic he said their is a short in the wires for the fuel injectors he also said he will be ordering new ones. "not sure how much the new wires for the fuel injectors are going to cost".

Lizard928

if he replaces just the connectors with a short pigtail, not much, if he orders a new fuel injection harness from porsche, prepare to pretend your at sea and bend over.

Panzer9

There's your problem- One of the plugs is lying on the fuel rail . That should probably be in the hole, shouldn't it?

88porsche928

panzer9, i wish it was that easy. I took it out to see if the spark plugs sparked, then i put it back in.

Panzer9

Sorry Dude- just being a smart- ***. I've got an 88, too, I did the intake rebuild last year- Did any of the connecters disintegrate? are the injectors fully seated, are all of the vacuum lines per the factory diagram?

88porsche928

the fuel injectors where seated, the vacuum lines where are replaces "atleast the ones I know about", the connectors looked normal. Its at a mechanic right now.

ErnestSw

Look at the connector to the crank sensor. That's why mine wouldn't start after my intake rehab.

88porsche928

actually before I took my car to a mechanic I could not locate the crank sensor. i asked if any one knew where it was and nobody could tell me. i can't really do anything right now that car is with a mechanic.