Cricket sound when accelerating

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Michael McC

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Similar sound on mine. Mech told me it is the manifold (headers) area. Air is escaping (leak).
I'm convinced that is what it is. I am getting some air leak noise at idle as well now. Did your mechanic give you a quote for the repair? Not sure I want to/am capable of digging in to fix mine. (See first post for what it takes.)
 
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Michael McC

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Just to follow up on this thread, confirmed by mechanic--broken stud on exhaust manifold, causing leak. I have a pair of CR Performance manifolds on order. When stock have a reputation for warping/breaking bolts, it's worth it to me to replace with aftermarket. The CR Performance have a good rep on the F150ecoboost forum. Now, whether to replace turbos at the same time...maybe upgrade. Might as well have some fun if we're tearing into that area!

By the way, the mechanic sees a lot of exhaust manifold problems with these engines, but far more on Chevy's.
 
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Michael McC

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Update on my exhaust leak. I got the exhaust manifolds in last week. I also ordered a pair of upgraded Melett CHRA turbo cores from CR Performance, thinking that the labor to get to them is done...I have 80,000 pretty hard miles...why not spend another $900 and prevent a turbo problem while adding a little performance?

Car is apart now at the mechanic. They called me and sent pictures. Both turbo housings and downpipes are cracked. Having to order those as well.

Total job is going to be north of $3,500 on a less-than-5 year old vehicle.

I'm guessing that towing horse trailers in Texas heat did this. I know towing is hard on a vehicle, but maybe the people who say the V6 is not built for that kind of load are right. It sure pulls well though.
 

JasonH

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Bump...I'm having a similar issue on my 2017 with 128K. Trying to figure out (1) which manifold to replace with (OEM or aftermarket) and (2) whether to tackle it myself. I got a quote of $800 from the Ford dealer for 4.5 hours of labor + parts. I just need another year or two out of this thing until my wife is done with school. In reading online forums, it's appears the CRP manifolds still fail. BD Diesel has one that supposedly uses more studs, but I haven't seen a diagram of the cylinder head to see how it actually attaches. It doesn't make any sense that the head would have holes for studs that are unused, but that's what BD is saying. It's not clear if you tap the holes for the additional studs, or if the holes are already in place.

 

OGBobbyJohnson

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Holes are already in place. I’m having trouble finding the replacements in stock. 2-3 weeks for the CRP and over a month for the BD diesel with the 11 holes. I have mine torn apart because of both rear studs broken that was noticed when upgrading the turbos. Guess i had better look closer at the down pipes on my 17. Had the same cricket sound but also left turbo was leaking coolant.
 

JasonH

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Holes are already in place. I’m having trouble finding the replacements in stock. 2-3 weeks for the CRP and over a month for the BD diesel with the 11 holes. I have mine torn apart because of both rear studs broken that was noticed when upgrading the turbos. Guess i had better look closer at the down pipes on my 17. Had the same cricket sound but also left turbo was leaking coolant.
Are you doing the work yourself? If so, what does the time commitment look like? I have a few towing trips planned this summer and would like to get the manifold(s) replaced before hitting the road. I'm wary of getting starting and not being able to tap out a broken stud or something. Right now the problem isn't severe...the manifold expands and seems to seal when hot. But I expect that it will get progressively worse.
 

OGBobbyJohnson

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Are you doing the work yourself? If so, what does the time commitment look like? I have a few towing trips planned this summer and would like to get the manifold(s) replaced before hitting the road. I'm wary of getting starting and not being able to tap out a broken stud or something. Right now the problem isn't severe...the manifold expands and seems to seal when hot. But I expect that it will get progressively worse.
About 2.5hrs each side down to the manifold but got lucky with studs having plenty left to get vise grips on. Studs actually came out without issues. YouTube has some good videos with tips and exact tools to help.
 
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