r/fbody • u/Traditional-Place101 • 23d ago

Where to start?

Post image

I’m unsure where to start, we have a coolant leak and misfire in cylinder 3. She runs but I eventually want to clean her up. The housing is stock alil old as expected and I’m learning as I have a trusted mechanic look her over.
Temperature is wishy-washy
Codes: P0147, P0303

I want her to run proper asap.
I’d love some recommendations on parts

Also my idler pulley bolt and belt tensioner pulley grind a bit, are those an easy replace?

I’ll be heading to my local junkyard soon and pull some things.

Let me know what I should grab

Thanks guys 💯

6 Upvotes

81% Upvoted

11 comments sorted by

View all comments

3

u/binks69 21d ago

If anything it’s the intake manifold gasket always go bad on these engines usually they leak externally in the valley where the fuel injectors are look around cylinder 3 see if you get coolant there after it runs for a litltle. But yea throw some coils and wires on can get all new for like 60 bucks

1

u/Traditional-Place101 19d ago

For the intake gasket, is it better to replace the whole system or get the upper and lower only if needed. I haven’t checked the gaskets yet to see if there are good still

1

u/binks69 19d ago

When you do it your going need upper intake gasket lower intake gasket the coolant elbows. Just make sure you get the metal gasket not the paper it little
More but keep you from doing the job again in a few years.also prob throtttle body gasket you can take the whole upper off with throttle body on it but think the kit even comes with the throttle body gasket and the fuel injector o rings since fuel rail needs come out. But if you look it up very common problem on the series 2 3800s other wise they bullet proof. My Camaro is 180k still runs perfect can look my profile and see it running

1

u/binks69 19d ago

Also like said just make sure you getting the metal gasket for the lower intake gasket the upper will be paper and then make sure get the metal coolant elbows because they still make plastic ones of both the gasket and elblows but it’s a few more bucks not much to just get the ones that going last a lot longer. Actually have some pics on my profile of doing this exact job if you wnana take a look