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Old 01-10-2019, 04:30 PM   #1
districtmotors
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Question Help getting off the bottle.

Hello! I am in the process of acquiring a very stock 1990 245. Overall, the guy before me seems to be an amateur mechanic like myself but has not been able to get the car off the bottle. The car sat for eight years prior to him owning it.

He replaced the in gas tank pump and sending unit as well as the external fuel pump and filter and fuel is reaching the rail. He has not installed but does have a new fuel pressure regulator. In addition, he has replaced the following:

- External fuel hose, pump and filter and applicable couplers
- Spark plugs
- Distributor cap and rotor
- Air filter
- All ceramic fuses

One suggestion he had was cleaning the injectors - does this sound right?

I appreciate your input as I diagnose both the car and impact on my wallet!
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Old 01-10-2019, 05:42 PM   #2
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Are you seeing the pulsing ground from the 'puter at the injectors?

After installing my 12 year old Ford V8 engine that had been in a warehouse for 11 of those not a single injector would pass gas. An ebay set of cleaned ones fixed it right up.
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Old 01-10-2019, 09:39 PM   #3
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Totally sorry but I don’t understand. Are you saying new injectors?
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Old 01-10-2019, 10:10 PM   #4
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Buy a noid light from IPD.

Got a test lamp? A meter?
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Old 01-10-2019, 10:58 PM   #5
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Quote:
Originally Posted by districtmotors View Post
Totally sorry but I donít understand. Are you saying new injectors?
My injectors were so gummed up that nothing came out at all with pulsing ground. I ordered a reconditioned and tested set off ebay and with the trade in of the old ones they were like $7 apiece. Been running happily for 20k miles.
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Old 01-10-2019, 11:52 PM   #6
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Isn’t it cheaper to just buy the reconditioned injectors than the NOID light? Who did you buy off of ebay?
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Old 01-10-2019, 11:53 PM   #7
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Ah, never mind just checked IPDS site.
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Old 01-11-2019, 12:47 PM   #8
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OP, if the car sat for so long, there’s a good chance some or all of the injectors are clogged from old varnished gas. I bought a 740 that sat (no idea how long) and it ran but 1 injector was completely clogged. I would just buy a set of used yellow injectors off here for cheap cheap. I ended up using my old 240s injectors in this 740 and they’ve been fine ever since.

If I still had a set laying around, I’d give them to you for the cost of shipping. Maybe someone will do the same.

However, before firing the parts cannon, you need to see if you’re getting an injector pulse. Common causes for no injector pulse are as follows:
•Dirty/loose grounds on the intake manifold. These are the ECUs grounds. Without them, the ECU cannot ground the injectors and get them to fire.
•Bad ECU. 1990 is early lh2.4 and they have issues. But don’t start here..


Also to note, you should jump the in tank pump as well as the main pump seperately (at the fuse box), and ensure yourself that pumps are running.
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Old 01-11-2019, 06:01 PM   #9
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1. check for spark.
2. check for fuel.
3. if you have both, there is something else wrong.

My expectation is that you simply don't have spark. with gummed injectors, the car will likely still run - just badly.
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Old 01-11-2019, 06:30 PM   #10
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An easy test for spark or fuel is to see if it will start on engine start fluid or flammable brake cleaner.
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Old 01-11-2019, 07:01 PM   #11
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Quote:
Originally Posted by quillc View Post
1. check for spark.
2. check for fuel.
3. if you have both, there is something else wrong.

My expectation is that you simply don't have spark. with gummed injectors, the car will likely still run - just badly.
Quote:
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An easy test for spark or fuel is to see if it will start on engine start fluid or flammable brake cleaner.
Guys, I may be wrong here, but Iím pretty sure when he says off the bottle, heís talking about starting fluid. As in, it runs off of starting fluid but wonít run on itís own fuel.
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Old 01-12-2019, 05:37 AM   #12
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quitting booze
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Old 01-12-2019, 06:39 AM   #13
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Quote:
Originally Posted by TestPoint View Post
An easy test for spark or fuel is to see if it will start on engine start fluid or flammable brake cleaner.
That's my favorite test. In through the regulator vacuum port. It is really easy to do on these LH-fueled 240s.

Maybe this is the bottle OP is talking about, as in feeding the baby naturally sometimes doesn't happen when things clog.



Once I've established spark is OK, rail pressure is my next question. Fuel delivery. Run the pumps with a jumper, such as fuse 4 to fuse 6.



Then, if you think those nipples are clogged, it is easy to check with the LH2.4 OBD mode 3 test of injector valve operation. This will work with the pumps running on the jumper, or even with residual pressure in the rail. Just turn the key on without trying to start the car and fire off the output test. Pull the injectors out of the manifold to see the spritz.

Check them one at a time by disconnecting the electrical plug from the others.



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Old 01-12-2019, 12:23 PM   #14
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I just repaired two cars this past year that both had clogged injectors. Both cars sat or the engine sat for a number of years. When I looked at the spark plugs they were completely varnished up. A cleaned set of injectors fixed both cars. I followed the checks suggested above and then ended up with injectors being the culprit.

We are going to see more and more of this as the alcohol in the fuel causes more deposits to travel down the fuel line to the injectors.
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