Help:LS1 misfire(FIXED)

[turbo_ls1_ss]

this was the first bent/broken pushrod i’ve seen in an LS1. i know of a guy who had a little shifting problem this summer though :eek: …3x

[Wahoo]

@turbo ls1 ss

this was the first bent/broken pushrod i’ve seen in an LS1. i know of a guy who had a little shifting problem this summer though :eek: …3x

yes i believe they didnt completely break in 2 pieces though, pretty crazy.

[Studderin]

how did a dead cly not show up to someone scanning the car?

[Firehawk853]

@Red00WS6

Glad to see its fixed, this is your first LS car? Im surprised you didnt feel that it was running on 7 cylinders.

Funny thing is on vehicles the Gen III/IV engines a misfire is barely noticeable looking at the engine or seat of the pants sitting in the car. SBC, BBC, and Fords shake like crazy with one spark plug wire off. Not the case with LS cars and trucks

@Studderin

how did a dead cly not show up to someone scanning the car?

Sorry I must have missed the “pushrod broken in 2” DTC
fucking retard

[turbo_ls1_ss]

i agree…
best way to tell is to load it up at low speeds and see whether it’s smooth or shaky

[Firehawk853]

@Studderin

how did a dead cly not show up to someone scanning the car?

Thanks for the inquiry John. I can show you the log scans if you require.

[Firehawk853]

Not to mention the thing was backfiring like a son of a bitch under decel.

:tup: to the “tuners” around here who rely on the computer to tell them what is wrong with the car. :cough:

[Studderin]

@Firehawk853

Sorry I must have missed the “pushrod broken in 2” DTC
fucking retard

I was thinking more of how the MAP, MAF showing data of a full 43.25 cubes not pumping.

[joelster]

@Studderin

The signs point to something up with cly6 witch you noted of the plug. You said you changed the plugs, wires, and that coil and it still fouled the plug. Its a 98 witch have some more downfalls, it should have the perimeter bolt heads, so you have no coil brackets making this a little more difficult. But I suggest you swap the coil pack harness, from passenger/driver side. And see if the issue moves with the coil pack harness. If its still #6 and its a M6 car I’d check for a bent push rod on #6. But check them all. Tons of m6 cars have bent pushrod and there no sings at all.
And check the grounds, 3 on the rear of the heads, the 1 to the block form the harness near the starter wiring. Other form the block behind the alt. the the driver side frame rail under the underhood fuses. I’m not 100% sure on the 98s, one of them on a back of the heads is for coils.

Do you get spikes of 4* KR when you feel missfire on the light loads. Its a 98 they have the problem, of 4* false knock. It’s the knock sensors and the harness. Its a good upgrade to change them for 99+ ones. More so a camed car, but if you have a bend pushrod(s) it was have the same susceptible affect. I think the SES light flashes on a 98 car from that too, but mostly is is from a P0300 random/multi missfires.

Yeah, what does studderin know. The guy could dismantle and rebuild an LS1 car blindfolded.

[Firehawk853]

@joelster

The guy could dismantle and rebuild an LS1 car blindfolded.

Yeah I know a few people like that including myself thanks

[jt76]

@Firehawk853

:tup: for J & J Speed Shop having pushrods in stock on a Sunday night to fix this problem

lol… it seems to be the recent fad around the shop, fucking up pushrods…

as you can see one is bent, the other one has the ball missing off of the top… these are 2 out of about 5 bent/ broken PR’s that Z28addiction had in stock on his car after he shifted from 3rd to 2nd at WOT instead of 3rd to 4th. Chuck had his old ones IN STOCK and ready to go at the firechuck residence, and Jefferson was back on the road in no time.

[sobo]

Twice the cylinders, twice the drama eh?

Haha. Jk.

Took it out again today, drives like a charm. I flushed the coolant, changed the oil and got a new serp belt.

Mint’

[psychopjv]

God the LS1 pissing contests friggin suck. More than one person in the area can build a decent LS1. Understand that for fucks sake. Useless banter in every fbod thread, including my own.

[BigEd88]

banter keeps us occupied while we wait for the updates to get in stock.