1800E leaking injector

[sleek lemur]

Hi all, craving your advice again!

I had a bad fuel leak from injector #2 and so bought the seal kit. Leak still as bad after fitting. Could the problem be the injector itself?

Took out injectors numbers 1 and 2 again and compared. Number 2's body is mostly covered in black glaze, whereas #1 is smooth steel. Put them back, but swapped positions. The offending injector still leaks (now at cylinder 1), but not as badly. Engine still hunting badly. Difficult to see clearly, but could the leak be from the injector itself? Certainly the top part is wet and I would identify the leak as where the blue plastic piece meets the metal body of the injector.

Does that seem possible/likely? Having swapped positions, I can't see any other option.

I'd really appreciate any wisdom, before I shell out on new Injectors.

Many thanks as always.

[Army]

Hi all, craving your advice again!

I had a bad fuel leak from injector #2 and so bought the seal kit. Leak still as bad after fitting. Could the problem be the injector itself?

Took out injectors numbers 1 and 2 again and compared. Number 2's body is mostly covered in black glaze, whereas #1 is smooth steel. Put them back, but swapped positions. The offending injector still leaks (now at cylinder 1), but not as badly. Engine still hunting badly. Difficult to see clearly, but could the leak be from the injector itself? Certainly the top part is wet and I would identify the leak as where the blue plastic piece meets the metal body of the injector.

Does that seem possible/likely? Having swapped positions, I can't see any other option.

I'd really appreciate any wisdom, before I shell out on new Injectors.

Many thanks as always.

You could get one of those fuel leak dye test kits on the bay of ee and see if the leak is at the top joint of the injector but I fear you'd be wasting your time for this instance but a kit like this might be of use in detecting other fuel leaks.

I'd go for the new set of injectors if they have been in the car for a long / unknown length of time. Check the fuel supply lines and the fitting to the injectors and replace the injectors as a set.

On my Mercedes CIS (system) I found I cured a hard starting problem by sealing unions with Loctite 5400 thread sealant. I didn't use it on the connections to the injectors but I don't see why that wouldn't work. The problem with using an additional sealant, however, is when you break the seal and you need to put things back together again...

[cassell]

Hi,
Reading your post I seem to think you may have two separate issues with your injector.

Firstly, the black glaze is likely to have been caused by a leaking/split/distorted seal ring which you have possibly rectified by fitting new seals. One question, did you also replace the thin O ring in the head where the injector fits or just the two thicker injector seals?

I would assume the blackening was caused by exhaust gas forcing its way past the seals?

Secondly, before you condemn your injector it's likely that the top blue bakelite part of the injector is getting wet with petrol because of a leak where the short rubber hose and collar are fitted to the inlet stub. Remember that the fuel pressure here is very high and the slightest weakness in that area will cause a visible leak and if left unattended, an engine fire!

Before spending a lot of money on new injectors have a look at this kit on eBay, it's got everything you need to overhaul all 4 injectors to ensure that they are properly petrol-tight.

https://www.ebay.co.uk/itm/Volvo-P1800-Bosch-0280150036-Fuel-Injector-Service-Kit-Kit-141/153248066071?hash=item23ae4bea17:g:jY0AAOSwEYpb4KE S

The kit doesn't include the thin O ring I mentioned but they are available from Brookhouse separately.

Hope this helps, Paul.

[sleek lemur]

Hi Paul, thanks for the really helpful reply. Just checked and the injector is leaking at the joint between the plastic cap and the metal body. Not clear whether the kit would solve that. Have asked the seller. If it does then you might have saved me £400!

Tim

[Clan]

Hi Paul, thanks for the really helpful reply. Just checked and the injector is leaking at the joint between the plastic cap and the metal body. Not clear whether the kit would solve that. Have asked the seller. If it does then you might have saved me £400!

Tim

I wonder if the later 940 injectors would work ? easily available and cheap . i have often though about fitting the whole LH system from one to a B20E it would run faultlessly ...

[sleek lemur]

Hi Clan, Simon from Brookhouse says he supplies the early 240 injectors as a direct replacement. He doesn't have any in stock right now and is checking with his supplier in Sweden. The eBay Mr Injector kit sounds v interesting, though, but I can't see from the picture of the kit how it.might solve my leak. Have messaged the seller, so let's see.

[sleek lemur]

Hi Paul and Clan. Spoke to manufacturer of repair kit and he has confirmed that my Injector is scrap. Really helpful fellow.

Brookhouse's usual suppliers can't help and so quote is £525. Good news is I should have them in 5 business days.

Bad news is I now can't afford to fee the cat.

Thank you both again.

Tim

[Clan]

Hi Clan, Simon from Brookhouse says he supplies the early 240 injectors as a direct replacement. He doesn't have any in stock right now and is checking with his supplier in Sweden. The eBay Mr Injector kit sounds v interesting, though, but I can't see from the picture of the kit how it.might solve my leak. Have messaged the seller, so let's see.

The 240 did not use those type injectors until 1990 , so I would say a late 240 , although they are the same as late 740 and all 940 .. I daresay 360 GLT are the same too . except the top fitting is not for a rubber hose , you might be able to use the whole rail if the injector spacing is the same , or perhaps someone supplies adapters to convert to hose fitting .

[Derek UK]

You look to be close to Brian Gue who runs Amazonia at Denham IP21 5EX 01379 871561. I think he might be worth a visit. He covers all old Volvos and could have some used injectors you could try.

[mocambique-amazone]

I wonder if the later 940 injectors would work ? easily available and cheap . i have often though about fitting the whole LH system from one to a B20E it would run faultlessly ...

940 injectors won't work

A LH2.4 swap is easy and will be the best running B20 ever
A LH2.2 with dizzy from a 240 with LH2.2 even more easy and tuneable at the ignition site.

Big problem in Germany: not road legal

Have a nice day, Kay

[LawsonJD]

I'd been looking for that eBay injector service kit.
Thank you.

[sleek lemur]

You look to be close to Brian Gue who runs Amazonia at Denham IP21 5EX 01379 871561. I think he might be worth a visit. He covers all old Volvos and could have some used injectors you could try.

Thanks very much for this! I seem to be surrounded by Volvo specialists in my part of Suffolk! 123GT is in my village!

I do wish I had a Waitrose locally.

[sleek lemur]

Brookhouse has supplied some injectors which work, however the boss for the electrical connection is larger, requiring me to enlarge the keyholes in the caps which hold the injectors to the head.

The flexible caps on the wiring loom now do not fit well the the injectors. (Luckily?) The ones on my loom are not in great condition, so I've been able to jam the plugs in.

Anyone had this issue and able to suggest a source for correct size connectors? Brookhouse are unable to.

[amazon69]

https://www.brickboard.com/RWD/index.htm?id=1622845&show_all=2

[amazon69]

https://reproparts.wazala.com/

[c1800]

I was able to get the 2 connector boots at the Volvo dealer about 4 years ago for less than $2 each. The 3+ connector boots were NLA. I bought those from Repro Parts.