82 308 fuel injected hot only start problem

Try a search using the term:

fuel pump check valve accumulator

Should get you ~50 prior threads on the subject -- we've had many reports of K-Jet models having warm restart problems usually caused by a faulty fuel pump check valve or a bad fuel accumulator (but don't buy anything until you actually confirm that you are losing all fuel pressure at warm shut-off, and that that is the root cause of your trouble).

 

One cause is the cold start injector dumping fuel into the plenum of a hot engine, thereby flooding it. My thermo-time switch went bad causing this.

I bought a fuel pressure tester to disprove the other theories about fuel pump and accumulator before I found the real problem. Warm start issues are like prostrate problems, everyone gets them eventually.

 

The thermo-time switch is the one in the valley?? Is that as big a pain to change as it looks?

Rick

 

I had the same problem. If holding the gas pedal to the floor allows the car to start, it's flooded. The themo switch tells the injection system that the engine is hot and not to inject additional gas on start up. It's very easy to check, just unplug the switch when the car is warm. If it starts right up. Bingo. Reconnect it and the problem will return.

 

Smallish pain but doable without removing engine lol. I had my mechanic do it because of the difficult lay and because I've heard removing the plenum opens the possibility of dropping flat washers into the engine. I kept thinking removing the oil filter would help but he didn't need to. Different strokes... I'd recommend positioning several small trouble lights to eliminate shadows plus have an assortment of end wrenches handy as you get very small bites at it each time.

 

hard to take a pic...but here it is.

this is what you will see if you look around the oil filter down to the bottom of the "V" (as in V8

you will need very small hands and fingers
.
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It would be far easier to just unplug the (more accessible) cold start injector itself for this initial test -- JMO...

 

I'll give you a Mulligan on this one, but you need to read your OM Section 3:
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I had the EXACT problem and it was a bad accumulator.....the test is soooo simple. From under the car, just pull off the vent side of the accumulator and if there any raw fuel..it's bad. Whats even better, autohausaz has the part for a fraction of the fcar price....just do a search...I think it fits like a 79 mercedes 450sl????? There is a thread for sure.

 

Some guys have this problem and it's the first thing they check.

There's guys like me who spend $100 for a pressure tester because of the many accumulator recommendations and eventually get to the very last thing in sight, the thermo-time switch and still not know until it's changed for another $100 for the part plus an hours labor. By now a $300 fix. Well got a story for the extra effort anyway.

Did you eat your carrots as a kid? Is that what it takes?

 

Yeah... but now you have the cool tools....!

Rick

 

If it turns out to be the switch, I was able to get one at Advance Auto Parts, $78.19.

 

Dean, the part you got at Advance Autos is it a part that fits all makes and models? European models?[/QUOTE]

My car is an '86 328. I'm not sure if they changed during production. I just left mine unplugged until I got around too replacing it. It didn't seem to matter as I don't drive the car in cold weather. You may want to try starting the car cold with it unpluged. It might not make any difference, in which case, I wouldn't reattach it.

 

I believe that all of the K-Jet without Lambda models (euro 308i-2V, US 308i-2V, euro 308QV/328) use the 113980 (Bosch 0280130220) Thermo-Time Switch, and that the K-Jet with Lambda (US 308QV/328) use a different one.

However, on the US 308i-2V there is another thermoswitch in series with the cold start injector that should prevent the CSI from firing when warm (so I'd check that too before buying a new TTS). What version 308i-2V do you have Steve - euro or US?

 

Can you post part numbers...? Picture of the box it came in?

Rick

 

The Thermo Time Switch is a Bosch, part # 0280130219. Advance Auto Parts didn't have a Bosch but was able to cross reference it to another switch. Per the receipt "Switch Coolant Temp BWD 18970615". Please note that this switch fit an '86 328. I don't know if all years are the same.

 

for future reference, US 1980 308GTSi
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