Fuel Injection Line - Should I replace

Rot 911 · 11-01-2003, 08:29 AM

I've heard a number of horror stories on the main fuel injection line on the 3.2 motronic fuel injection cracking and spraying fuel. Should I replace mine as part of my rebuild? The hose appears to be in good condition with no cracks and flexes easily. Naturally what I am trying to avoid is another $300 purchase, but don't want to be penny wise and dollar fuelish. What sayeth the group?
It is the line in red:

jstgermaine · jstgermaine's Garage

This isn't even remotely related to your injection question however, I sourced a metric butt load of early parts today!!!

If you need anything (read oil lines for the backdate) before I get the new one in, shoot me an email and I can forward you the info!!

Rot 911 · 11-01-2003, 02:23 PM

Come on guys the thread about spotless car washing is getting more replies than mine!

Rot 911 · 11-02-2003, 08:26 AM

Should I pronounce it Porsha fuel line? Will that help?

Jay Auskin · 11-02-2003, 08:31 AM

Sorry, I have MFI, but if you're concerned and want to save a few bucks, try to have it "rebuilt". You'll probably need to source the hose yourself, but I'm sure a hydraullic hose shop can have it crimped on for you. It sounds like you're deciding whether to spend $300 or worry about your car becoming a bonfire....you may have answered your own question.

914/6now911 · 11-02-2003, 09:02 AM

I recently bought an '88 3.2 with 85k miles to put in my '73 T. All the rubber fuel lines are slightly cracked. My mechanic says to definitely replace them. He cuts the crimp ends off and use fuel hose clamps instead of the $500.00 factory pieces. I would be uneasy about this, but he is one of the top wrenches in San Diego and has done this many times before with no problem.

jmohn · jmohn's Garage

Replace it, or get it "rebuilt" as someone else suggested. Try a hydralic hose shop. They can cut off and re-install the fittings on new, modern, high-pressure, fuel hose. My 951 went up like a torch due to a bad fuel supply line (different car but the same type hose). One of the problems with this vintage hose is it often fails from the inside out, so there is very little or no obvious external flaws until it "lets go". Change it !!

Good luck,
Jerry M
'78 SC

RoninLB · 11-02-2003, 11:57 AM

So the routine is to cut the old stock line without much top engine dis-assembly and bring the cut part to the hose shop and twist the new braided line in?

FWIW my brother has a '88 and I try to help keep his car intact.
thanks......Ron

masraum · 11-02-2003, 12:10 PM

Fortunately you can see what sort of shape all of the rubber portions of the highlighted line, so if the rubber looks good then don't worry about it. The line that could be a big problem (at least was on my car) is the one behind the intake. It's all rubber, and you can't see it. It's cheap and easy to replace though, that's the one that I would worry about. It's the one in the diagram that runs between the two valves on the back end of each fuel rail.