8psi to much back presure?
#5
Mr. Links
iTrader: (1)
Originally posted by RX-8
I was told by a shop that this is way to high for an fd, is this true? Do i need to replace my cat? Thats what they were saying.
I was told by a shop that this is way to high for an fd, is this true? Do i need to replace my cat? Thats what they were saying.
If you take a look at this thread:
https://www.rx7club.com/forum/showth...=back+pressure
7 lbs of back pressure with a high flo cat, so 8 lbs with the stock cat doesn't sound like it's clogged...
#6
Let me explain in greater detail. I have alot of hissing coming from my engine bay and my downpipe glows on the part that connects to the engine. So I was thinking that the back pressure from my "clogged" cat could be the reason for the glowing downpipe and possible the vaccume hoses hissing possible because they have blow off. Rotary Gods does this make since? As is it turns out the shop that told me about my clogged cat is not reputable, thanks.
Trending Topics
#11
Mr. Links
iTrader: (1)
Originally posted by RX-8
12-10 is what my mechanic said. i think i am going to take the intae pleneum off and look for loose vaccume hoses.
12-10 is what my mechanic said. i think i am going to take the intae pleneum off and look for loose vaccume hoses.
Just pick up a cheap one. You won't be staring at it every day, but they REALLY help in situations like these.
http://66.216.67.51/product.asp?0=212&1=270&3=388
12-10 what? Is that suppose to be your boost pattern? Did your mechanic happen to mention what your vacuum was?
#12
No he didn't mention my vaccume. It was a Mazduh mechanic (idiot). To make a long story short I buy a new engine from mazda and have them install it and it runs 100 times worse then the original engine! Sorry had to vent. The boost pattern the mechanic said was 12 and slowley pull back to 10. But who knows.
#13
Mr. Links
iTrader: (1)
Originally posted by RX-8
No he didn't mention my vaccume. It was a Mazduh mechanic (idiot). To make a long story short I buy a new engine from mazda and have them install it and it runs 100 times worse then the original engine! Sorry had to vent. The boost pattern the mechanic said was 12 and slowley pull back to 10. But who knows.
No he didn't mention my vaccume. It was a Mazduh mechanic (idiot). To make a long story short I buy a new engine from mazda and have them install it and it runs 100 times worse then the original engine! Sorry had to vent. The boost pattern the mechanic said was 12 and slowley pull back to 10. But who knows.
Your best bet at this point is to get a boost gauge, hook it up and check the following things:
1. Vacuum at ildle (idle should be around 750-800 rpms)
2. Do the boost test: http://www.scuderiaciriani.com/rx7/boost_test.html
Once you have those results, it will be much easier to troubleshoot what is going on. Good luck!
Thread
Thread Starter
Forum
Replies
Last Post
CaptainKRM
2nd Generation Specific (1986-1992)
14
08-26-15 09:52 PM