Answer
Apr 18, 2024 - 11:09 PM
Hello there!
I hear you've got a head-scratcher over that Dodge Journey throwing P0305 (cylinder 5 misfire) and P0300 (random misfire) codes, even after changing the plugs, coils, and intake gaskets. That's rough, but let's see what else we can tackle.
Since the rough idle points to a problem with cylinder 5 specifically, here's what I'd check next:
1.) Fuel Injector Blues: A bad fuel injector on cylinder 5 could be causing the misfire. These can get clogged or faulty. You could try swapping the injector from cylinder 5 to another cylinder and see if the code follows. If it does, then bingo, bad injector!
2.) Compression Check: Less likely, but a weak valve or ring on cylinder 5 could cause misfires. A compression check will tell you if that's the culprit. This might be a job for a mechanic, but it'll pinpoint any internal engine issues.
3.) Vacuum Leak Hunt: An unseen vacuum leak could be causing wonky air/fuel mixtures and misfires. Listen for hissing sounds around the intake manifold or vacuum hoses with the engine running. If you find a leak, patching it up could solve your problems.
Swapping the injector is a DIY possibility, but the compression check and vacuum leak hunt might be better left to a mechanic. Those guys have the tools and experience to diagnose these issues quickly.
Once you've identified which part needs to be replaced, click this link to be directed to our website where your vehicle information has already been entered. Simply enter the part's name into the search field to get started.
Let me know what you find! In the meantime, don't keep driving it too much with a misfire – it can damage the catalytic converter.
I hear you've got a head-scratcher over that Dodge Journey throwing P0305 (cylinder 5 misfire) and P0300 (random misfire) codes, even after changing the plugs, coils, and intake gaskets. That's rough, but let's see what else we can tackle.
Since the rough idle points to a problem with cylinder 5 specifically, here's what I'd check next:
1.) Fuel Injector Blues: A bad fuel injector on cylinder 5 could be causing the misfire. These can get clogged or faulty. You could try swapping the injector from cylinder 5 to another cylinder and see if the code follows. If it does, then bingo, bad injector!
2.) Compression Check: Less likely, but a weak valve or ring on cylinder 5 could cause misfires. A compression check will tell you if that's the culprit. This might be a job for a mechanic, but it'll pinpoint any internal engine issues.
3.) Vacuum Leak Hunt: An unseen vacuum leak could be causing wonky air/fuel mixtures and misfires. Listen for hissing sounds around the intake manifold or vacuum hoses with the engine running. If you find a leak, patching it up could solve your problems.
Swapping the injector is a DIY possibility, but the compression check and vacuum leak hunt might be better left to a mechanic. Those guys have the tools and experience to diagnose these issues quickly.
Once you've identified which part needs to be replaced, click this link to be directed to our website where your vehicle information has already been entered. Simply enter the part's name into the search field to get started.
Let me know what you find! In the meantime, don't keep driving it too much with a misfire – it can damage the catalytic converter.
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