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Hello all,

Brand new to the forum. I'm working on a custom application that has the Solstice GXP Turbo engine in it (I believe it's from an '08). My client states he ran the fuel level down very low, possibly to empty. He then added a couple gallons from a hand-held gas can. On his drive home afterwards the vehicle had a terrible misfire. I've isolated the problem down to Cylinder #4. It looks to me like it's a problem with the injector itself for that cylinder after checking continuity on all the wires, swapping the coils/plugs around between cylinders, etc.

My question to the members here, is this a 'common' or known issue with this engine? If so, is it directly related to letting the engine almost run out of fuel? Thanks for any help!
 

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There are cases where running out of fuel at high power levels has caused damage to the piston. Have you checked compression? A lean condition can result in detonation and damage, though it's rare.
 

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It’s a common issue if he ran it completely out of fuel. If the car stopped due to lack of fuel, the HPFP is wasted! And for some odd reason, it always shows the number 4 cylinder (about 80% of the time) or the number 1 cylinder issue. You CANNOT run these cars out of fuel!!!
 

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Hmm, Interesting. weird but interesting. I'll be sure and bot be lazy and let mine get so low that the light is on. Thanks.
 

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I've been chasing a misfire in #3 cyl for almost two years to no avail. I've tried everything except replacing the injector. At one point I gave up and brought it to the dealer and after checking everything they couldn't find the problem.
I can drive the car for 100 to 200 miles after erasing the code with no indication of any problems and for no apparent reason the check engine light goes on. The car runs fine but I get a misfire code on cyl #3. If you do figure this out please let me know.





Hello all,

Brand new to the forum. I'm working on a custom application that has the Solstice GXP Turbo engine in it (I believe it's from an '08). My client states he ran the fuel level down very low, possibly to empty. He then added a couple gallons from a hand-held gas can. On his drive home afterwards the vehicle had a terrible misfire. I've isolated the problem down to Cylinder #4. It looks to me like it's a problem with the injector itself for that cylinder after checking continuity on all the wires, swapping the coils/plugs around between cylinders, etc.

My question to the members here, is this a 'common' or known issue with this engine? If so, is it directly related to letting the engine almost run out of fuel? Thanks for any help!
 

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I had a similar problem last year and the dealership told me it was due to to much carbon build up. They used some engine and fuel injector cleaner on my car and it went away within 250 miles. High carbon build up on these turbo engines is very common. However, if a good tier 1 gasoline like Chevron with Techtron is used on a regular basis this should not happen. (I have no idea what the previous owner used for gas, bought the car used) Do not use cheap gas or regular, you must use premium gas on these engines. I use a good cleaner before every oil change is good too. I use Seafoam fuel and engine treatment and like the results. It's cheaper than the dealership and has the same results.
 

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Sounds like it would be worth trying a new HP pump to solve the issue.

What are you building with the LNF engine?
 

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Sounds like it would be worth trying a new HP pump to solve the issue.

What are you building with the LNF engine?
Oh, I wouldn't just throw expensive parts at this problem. Unless you have a "reduced engine power" warning, or a code that indicates low fuel pressure, I wouldn't assume High Pressure Fuel Pump failure. Those little puppies aren't cheap and shouldn't cause a single cylinder dropping out. A failed HPFP will mean overall significantly diminished power, to the point you can barely make 50 MPH on level ground.

Dropping a cylinder could mean something as simple as an intermittent spark plug or coil pack.
 
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