Marvick08GT Posted June 1, 2019 Share Posted June 1, 2019 Been doing all the maintenance and getting parts put on as I have time. Put the fuel filter and AEM340lph pump in last week. Fuel trims improved and correction went down to ~+4. Figured I would change the plugs and put in my upgraded coils... Passenger front was SK20HR11 Passenger rear was IKH20 Driver front was LFR6AIX Driver rear was IKH20 What in the literal Fu**! Gaps ranged from .033 to .045 Just venting, Not even sure how that happens.. Lazy shops most likely... That solved my "rough" idle... Smdh Runs great now, replaced all with SILFR6A plugs ( going e85) Link to comment Share on other sites More sharing options...
Max Capacity Posted June 3, 2019 Share Posted June 3, 2019 (edited) I hope you put the new plugs in with the gap set at .028" The fuel pump shouldn't change much of anything. The fuel pressure regulator will only allow so much. What did the old fuel filter look like ? Was is dirty ? Edited June 3, 2019 by Max Capacity 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
08SpecB_DE Posted June 3, 2019 Share Posted June 3, 2019 PO probably did one at a time as it would throw a misfire and didn't want to pay to have them all done. I could be wrong but I thought the SILFR6A were iridium with the plastic caps over the threads indicating to not check the gap because it can damage the electrode. Link to comment Share on other sites More sharing options...
Marvick08GT Posted June 3, 2019 Author Share Posted June 3, 2019 (edited) Exactly, I did check the gap with feeler gauges, was .029. Filter was probably original, 180k. I love bringing these cars back to life. Edited June 3, 2019 by Marvick08GT Link to comment Share on other sites More sharing options...
Darth SpecB Posted June 4, 2019 Share Posted June 4, 2019 Yes thanks, but how did it look? We want pictures of 180k fuel filter. Sent from my SM-G950U using Tapatalk Link to comment Share on other sites More sharing options...
08SpecB_DE Posted June 4, 2019 Share Posted June 4, 2019 I'm at 120k and have been thinking about upgrading the pump and replacing the filter Link to comment Share on other sites More sharing options...
Marvick08GT Posted June 4, 2019 Author Share Posted June 4, 2019 Lmao, to be honest, everybody should change theirs. My previous LGT started leaning out upper rpm on the Dyno, that's how we knew. I just replaced this one for maintenance ( and the pump ). I didn't take pictures of a filter lol, I thought about it, but it looks the same just very dark. No way to tell by look if it is good, if you get that far might as well just change it. Going to need a new front subframe, a couple of the blind welded nuts are just turning... Whomever worked on this car should have put the air tools down.. Link to comment Share on other sites More sharing options...
08SpecB_DE Posted June 4, 2019 Share Posted June 4, 2019 Eh, they're always dark lol I replaced one on a 15 legacy the other day and it was black too. I was more curious if there was a lot of build-up. Link to comment Share on other sites More sharing options...
Marvick08GT Posted June 4, 2019 Author Share Posted June 4, 2019 Nope, no grit or dirt that was loose in the filter, nothing in the bottom of the tank... The pump that I pulled out looked like a $15 eBay special... No markings and just a polished body. Lmao Link to comment Share on other sites More sharing options...
Dishwasher Posted June 4, 2019 Share Posted June 4, 2019 I just did my spark plugs, 70k miles and the gaps had all gotten to .06, way out of spec. Car runs quite a bit better now. Brought to you by Pfizer Link to comment Share on other sites More sharing options...
Max Capacity Posted June 4, 2019 Share Posted June 4, 2019 FWIW, here's mine from last Fall or was it the year before that. Somewhere around 250,000 miles. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
Marvick08GT Posted June 5, 2019 Author Share Posted June 5, 2019 That's the fuel pump strainer ( prefilter ) That's a lot of dirt though! The actual filter is the housing the pump sits in. You have to disassemble the fuel pump assy to change it Link to comment Share on other sites More sharing options...
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