Stupid K-jet. If it weren't for the crummy nylon/plastic/teflon(?) lines, it'd be perfect.

What size ID of the lines that run from the fuel distributer to the injectors on a NA 240? 6mm? 8mm?
I know that DeLorean, VAG, and other cars from the early 80's have the same injection setup, and some of them have much better looking plumbing than the Volvo version.

Has anybody just replaced them with 1/4 or 5/16ths inch high-pressure hose? It's seem to be a lot cheaper/easier to find than metric.
--
1980 244 DL

Steel-braided Audi/VW lines seem to be working fine. I spoke with two old Swiss mechanics before installing the "new" line. They both said that the slight decrease in internal hose diameter shouldn't any cause problems since the injectors are supplied with significantly more fuel than they actually need. They also agreed that the plastic factory hoses sucked even when they were new.

I'm going to sleep a lot better with these VAG hoses that I salvaged installed than I ever would with hose clamps, or some other sort of patch job. The steel braiding adds a little something in terms of looks too.

I pulled mine from an old Audi GT and a VW Fox, but I think the same lines are used on most VAG cars from the early 80's. (Grab two of the shorter injection hoses off two separate cars for a better fit under the NA manifold.) They were like $5 a piece at my local yard, which does seem a bit steep for used hose, but still, it's waaay cheaper than the $180 that Volvo wanted for more of that crappy plastic.


--
1980 244 DL

Hi there Mr. Brontes, esq.

FWIW - a good assessment of this thread.

First, you didn't have a very wide audience because you did not select a model or year, which places this in the "all-all" forum, one not many have the time to read.

Second, there have been many posts made looking for sources for the nylon line you and your Swiss friend disparage. It is unusually thick walled, compared to the nylon line used elsewhere in the Volvo, most of which I can source locally, so the close approximations to the line Volvo used seem to be available in Europe, sold to other fans of the Bosch mechanical injection. I've tried to help in that respect, but found others had done better locating a similar product in Germany, if I recall.

I think Volvo's objective (if not Bosch's) was to keep the volume between distributor and injector a constant over pressure variations, something an ordinary rubber line would not do as well. I own three k-jet cars, and so far have not broken any of the nylon, but it helps to know what it is before handling it. I'm confident this is what causes most of the need to replace it I see posted on the board, whether by current or previous owner.

Also, I agree, the braided look has eye appeal, in the Saabs and Audis I've come across in the yards. Haven't looked in any VW's. Maybe you'll post a picture of the improvement you've made, and include some detail regarding the source and make-up of your injector lines.

For what its worth,


--
Art Benstein near Baltimore

When you dream in color, it's a pigment of your imagination.

Really? So I'm the first Volvo owner to ever have a leaky CIS injector hose?
Seriously, what's the recommended course of treatment here?

Can I safely swap the line out with one from another make? or do I just need to visit the hydraulic shop?
I grabbed a couple of steel braided Audi lines at the junkyard, but their internal diameter is a little bit smaller. Besides a slight possible reduction in HP, are there any other risks?

Volvo has stopped making this part. And they want close to $200 (per line) for what's left of the old stock.
Surely someone has come up with a good solution to this sort of problem

--
1984.5 Factory-Intercooled 242 Turbo :)