Trying to start rebuilt engine. Gassing plugs

[JBeezy]

I have everything installed and plugged in. Engine turning over but will not fire no other than a little hint when it’s first turned over. Pulled the plugs and they all have gas on them. What could I have missed? Any idea? If I hold the throttle down it tries to hit.


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[Turbov6Bryan]

Might just be flooded. If you have the gas pedal floored, it should shut off the injectors... your saying it tries to hit? Have you verified spark?

[JBeezy]

Might just be flooded. If you have the gas pedal floored, it should shut off the injectors... your saying it tries to hit? Have you verified spark?

Just verified spark and used a noid setup to verify pulse at injectors. Test #1 harness.


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[Turbov6Bryan]

You have fuel air and spark. Now the question is is it just flooded and or does it sound funny when you crank the engine over? Timing correct?

[JBeezy]

You have fuel air and spark. Now the question is is it just flooded and or does it sound funny when you crank the engine over? Timing correct?

I I’ll say it doesn’t sound the same as the stock engine when turning it over, but even with the broke ringland the stock engine started and ran ok minus the miss it had at cylinder 3.

The timing chains and guides are new and they were supposedly timed correctly. Engine has been put together a few years, and honestly we didn’t check it again before installing. If all else fails, that will have to be checked.


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[musclemerc]

3 things needed to start an engine....
Compression, fuel, and spark.....

[JBeezy]

3 things needed to start an engine....
Compression, fuel, and spark.....

Agreed. I’m leaning towards the timing possible being off unless there is something else I don’t know about.


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[justbob]

If it was too far out of time it would have already bent some of your valves so I’m doubting it isn’t by much if so.

At this point the simplest thing to do is blow out the cylinders and try a new set of plugs. And double check all connections around the engine are fully clicked on.


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[JBeezy]

If it was too far out of time it would have already bent some of your valves so I’m doubting it isn’t by much if so.

At this point the simplest thing to do is blow out the cylinders and try a new set of plugs. And double check all connections around the engine are fully clicked on.


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I’ve double checked everything a few days ago prior to adding oil and coolant. I have my mind already set on pulling the cover and checking the timing. My DA should have double checked it while I had the engine out and the cover off. Live and learn.


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[justbob]

Don’t rely on the links lining up because once spun, they don’t. Just make sure the marks are all lined up.


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[hotford]

Sounds like your not getting any air??, is this car supercharged? if so sure you never plugged or capped the blower inlet so debris wouldn't get in and just forgot to remove it, sounds like my buddy's car just a hint of ignition and the plugs were wet.

[JBeezy]

Sounds like your not getting any air??, is this car supercharged? if so sure you never plugged or capped the blower inlet so debris wouldn't get in and just forgot to remove it, sounds like my buddy's car just a hint of ignition and the plugs were wet.

Lol. You could be on to something. I did have the procharger rebuilt and it came back with all the openings taped off. I could have easily installed the procharger with the outlet end taped up and forgot to remove the tape. [emoji23][emoji23]. If this is true, I would have noticed it when I removed the procharger in order to start removing the timing cover. This would be hilarious and a relief. I’m definitely pulling the pipe this afternoon to see if that tape is still there. It would have been a little hard to tell when I pushed the pipe up from underneath the car as the tape over the hole is/was black. [emoji2363]. I’ll definitely report back this evening. Smh!!


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[JBeezy]

That wasn’t it. We are going to try and start it without the procharger hooked up to see what happens. If that fails we plan on pulling the covers and checking everything. That’s all I know to do


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[JBeezy]

Hey guys. Before I get the covers pulled. I want to make sure I’m understanding how the cam orientation should be. I’m looking at the manual online and it appears the RH side cams should be oriented with the notches down at 6 o’clock and the LH side the cams should be oriented with the notches up at 12 o’clock as shown in the pic below

https://uploads.tapatalk-cdn.com/20190714/b3d12bc028dcb1224ae5b2418f3f42 df.jpg

Then of course the chains should be as shown here when everything is in time. I’m just making sure I understand this correctly before we go in.

https://uploads.tapatalk-cdn.com/20190714/784d9a3644185724c9582c2dd4badf 5b.jpg



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[MyBlackBeasts]

Once you fuel foul a plug with unleaded gas the plug is junk...

Try what Jbob said, dry cyls & new plugs. You mat be making the issue more complicated than it actually is.

[JBeezy]

Once you fuel foul a plug with unleaded gas the plug is junk...

Try what Jbob said, dry cyls & new plugs. You mat be making the issue more complicated than it actually is.

Understood. I went ahead and pulled the front cover and the driver side cam cover. Lifted the passenger side cover as I couldn’t get it off. Got the timing marks all lined up and it appears to be in time. Only exception is it appears that both notches on the cams are up. Not sure if the pic above is shown that way for illustration or that’s the way it should be. Wouldn’t think so because that would throw the timing mark on the RH off. If up is how they suppose to be then all is good.

With that said, if it fouled the plugs upon the initial start, then what caused that?


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[Turbov6Bryan]

I've posted many times that if you turn the key on, floor it, then crank... it should shut off the injectors. It depends on the tune.
I usually post this information once it turns winter, these cars start to flood at random.
Why yours may have done it, who knows... if the plugs are wet, it won't start, it's flooded

[MyBlackBeasts]

Understood. I went ahead and pulled the front cover and the driver side cam cover. Lifted the passenger side cover as I couldn’t get it off. Got the timing marks all lined up and it appears to be in time. Only exception is it appears that both notches on the cams are up. Not sure if the pic above is shown that way for illustration or that’s the way it should be. Wouldn’t think so because that would throw the timing mark on the RH off. If up is how they suppose to be then all is good.

With that said, if it fouled the plugs upon the initial start, then what caused that?


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What caused it? Who knows. Firing up a new engine is a cra p shoot. Poop happens trying to get the initial fire. I did a cam swap on my old Camaro and with the start up & break in and finally getting carb dialed in took 3 sets of plugs.

Tis what it is...

[Cougar_Marauder]

My FRPS recently went out on me and after it flooded the first time nothing I did worked until I put all new plugs in. It's worth a shot at least.
https://www.mercurymarauder.net/forums/showthread.php?107676-Will-not-start

[JBeezy]

Update. Found that the exhaust cams were swapped. LH exhaust cam was on the RH head. Going to take a look today to see if there was any sign that the valves possibly hit the pistons. Engine has dish pistons as it was built for boost so fingers are crossed.


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[hotford]

[QUOTE=JBeezy;1579730]Update. Found that the exhaust cams were swapped. LH exhaust cam was on the RH head. Going to take a look today to see if there was any sign that the valves possibly hit the pistons. Engine has dish pistons as it was built for boost so fingers are crossed.


Did the cam # marking I gave you help you out?

[JBeezy]

[QUOTE=JBeezy;1579730]Update. Found that the exhaust cams were swapped. LH exhaust cam was on the RH head. Going to take a look today to see if there was any sign that the valves possibly hit the pistons. Engine has dish pistons as it was built for boost so fingers are crossed.


Did the cam # marking I gave you help you out?

Yes. It actually did help. Only difference is the fact that the cobra cams are labeled differently. Actually easier to under where they go, which is why I don’t understand how he mixed them up. [emoji2363]


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[JBeezy]

Guys. I got the car put back together and it seems to be running pretty good. I think I’m going to swap in some new plugs in the next week or so and maybe some new coils. Thanks for all of your help.

With that being said, I did learn a lot about these engines that I didn’t know prior to this situation.


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