Bealiebeach

Okay I have a 2004 Civic DX Coupe has 190,000 miles on it.
So I just got this car and was trying to just do some preventive maintenance to make sure everything was operating at the best it could. So I decided to do seafoam. Did the can in the tank, 4 OZ in the oil, then was doing the spray into the intake. When I was about half way done with the bottle it kinda shook and made my hand slip off the throttle and it died. So I went to start it to keep the treatment going and it now will not start.

It turns over but doesn't even try to start. So far I have waited two days to make sure the seafoam had evaporated. I checked the spark plugs today and decided to change them. Still no luck. There is no check engine light that is on. I got some starting fluid and still no start and not even close to starting.

I'm thinking ignition coils but there is no check engine light. I'm planning on checking the cylinder compression as well. Does anyone have any other ideas or has had this happen?

Slumpertcivic

Try removing the top O2 sensor, you might have actually blown the final straw worth of junk to completely seal up the catalytic converter.

Wankenstein

Cylinders may be flooded? Try cranking the engine with the gas pedal fully depressed (WOT). This will disable the injectors and allow maximum airflow.

Colin42

Pull the spark plugs and crank it, see if anything come comes out, if they reek of seafoam leave the plugs out overnight and try again

ezone

Probably flooded it, plugs got wet and now won't fire.

Might also have a pool of liquid down in the bottom of the intake manifold. You might want to extract that out of there before it decides to cause more problems

Bealiebeach

How would I do that? Just looks down in there?

Bealiebeach

I'll give this a try as well. I will have the Coils tomorrow and will replace them all really quick.

Bealiebeach

I tried this sadly it didn't help.

RobertD

You should not be buying and changing parts. You will just create more and separate problems. Verify you have fuel pressure and the injectors pulse, verify spark, don't start buying parts.

Bealiebeach

so I checked for spark did not have spark. All fuses are good and the timing belt. Is not broken.

RobertD

I would recommend rechecking with a plug grounded to a good ground that you reeeeally have no spark, and then waiting from some of the smarter minds here why that might be. I can't imagine four coils could possibly fail at the same time, and usually those are not returnable, so I'd hate to see you waste money on something you don't need.

RobertD

Read the similar 04 civic no spark thread here for ideas and testing info thread here: https://www.civicforums.com/forums/3...-no-spark.html

Bealiebeach

I verified there is no spark. I took each plug and put it up against the block in order to ground it and there was no spark. I'll check out that link.

Slumpertcivic

ezone

4 coils do not go bad at the same time.


Test, don't guess.

Bealiebeach

Solved it. It was a fuel pump fuse. Does the car not spark if that fuse is blown?

ezone

Depends on which fuse it was. Some cover far more than just what is listed on the label. .
Which position number in which fuse box?

WHY did it blow?

Bealiebeach

Under the dash. Number 13 the fuel pump one

ezone

According to the manual i have in front of me:

Fuse 17 is labeled fuel pump.
Provides power to SRS, PCM terminal E9, and main relay #2
Soooo yea if the PCM is missing one of its power sources I can see it not letting anything work including everything for ignition (spark) output.


But what caused the fuse to blow?

Bealiebeach

I guess the seafoam? Seems weird but that is what seems like what happened .

Slumpertcivic

RobertD

i would guess that all the violent shaking and rumbling caused the wiring to bounce around quite a bit, probably an intermittent loss of connection or intermittent short. just a wild guess though

after my last sea foam incident, i kinda outgrew the stuff. this: https://www.civicforums.com/forums/2...ml#post4743074

thank you for coming back and reporting the fix (:

Bealiebeach

No problem thanks for the help everyone.