blown engine

[edlugz]

my red top just crapped out today, im not sure wat happend exactly but it has a huge knock and it blew the spark plug and coil out of the number one cylinder..the plug no longer had a ground electrode....im pretty sure im gonna need a new head but i cant find any for sale online and im trying to decide whether to rebuild to replace the engine and has anyone had a similar failure..i wana know wat probably caused it

[duffman1278]

I'd say if you don't depend on your car as a DD and you have the tools, do a rebuild.

[edlugz]

its my dd but im thinking of swapping in a ka temporarily while i do a rebuild

[the converted]

Swap in the KA and then see what is broken in the engine. You might need a new block and pistons depending on exactly what happened. I've never had a spark plug actually come out on me but the last time one came out without an electrode a valve destroyed most of the engine.

[edlugz]

well it turns out that the engine is fine..the spark plug backed its self out of the head and then shot out...i replaced the plugs and now its running fine, my only problem is that all the plug were extremely worn, they all looked over heated and two of them(including) the one that shot out had a broken ground electrodes, so now i gotta see wat cause the heat...it looks like detonation to me, i run 91 octane and have a walbro pump so i dont know why its detonating

[duffman1278]

I was about to point out detonation as well. Better fix that quick so you do actually HAVE to rebuild your engine anytime soon.

[edlugz]

i dont know the cause though...im thinking its timing may be too advanced...wats a good basetiming

[duffman1278]

There's a way to hook it up to a timing gun. I know hijacker made a DIY thread on here, its somewhere around here. You should look into changing the knock sensor, or testing it per FSM requirments.

What kind of spark plugs are you using? Make sure you have the right heat range for it.

I'd also check your fuel pressure, might be running really lean.

[edlugz]

im using ngk platinums, regulars ones, im running th stock fpr and its seems to have started detonating when i put the walbro pump in

[kouki_hmongster]

swapp the ka in and go ka-t.

[duffman1278]

^^^^ Great suggestion.....

Any how, try replacing your fuel filter with a Z32 one. Check you're fuel pressure as well with something like this, you might be low for some reason. Shouldn't be because I'm running a walbro and I'm running rich lol

[edlugz]

im pretty sure i have the z32 filter...but ill check the fuel pressure...wats a good spec?

[duffman1278]

iirc, but don't take my word on this I'm not 100% sure, but I believe 43.5psi should be right.